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);
128 sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t tsn, uint16_t sseq, uint16_t stream, int from)
130 struct sctp_cwnd_log sctp_clog;
132 sctp_clog.x.strlog.stcb = stcb;
133 sctp_clog.x.strlog.n_tsn = tsn;
134 sctp_clog.x.strlog.n_sseq = sseq;
135 sctp_clog.x.strlog.e_tsn = 0;
136 sctp_clog.x.strlog.e_sseq = 0;
137 sctp_clog.x.strlog.strm = stream;
138 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
141 sctp_clog.x.misc.log1,
142 sctp_clog.x.misc.log2,
143 sctp_clog.x.misc.log3,
144 sctp_clog.x.misc.log4);
149 sctp_log_nagle_event(struct sctp_tcb *stcb, int action)
151 struct sctp_cwnd_log sctp_clog;
153 sctp_clog.x.nagle.stcb = (void *)stcb;
154 sctp_clog.x.nagle.total_flight = stcb->asoc.total_flight;
155 sctp_clog.x.nagle.total_in_queue = stcb->asoc.total_output_queue_size;
156 sctp_clog.x.nagle.count_in_queue = stcb->asoc.chunks_on_out_queue;
157 sctp_clog.x.nagle.count_in_flight = stcb->asoc.total_flight_count;
158 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
159 SCTP_LOG_EVENT_NAGLE,
161 sctp_clog.x.misc.log1,
162 sctp_clog.x.misc.log2,
163 sctp_clog.x.misc.log3,
164 sctp_clog.x.misc.log4);
169 sctp_log_sack(uint32_t old_cumack, uint32_t cumack, uint32_t tsn, uint16_t gaps, uint16_t dups, int from)
171 struct sctp_cwnd_log sctp_clog;
173 sctp_clog.x.sack.cumack = cumack;
174 sctp_clog.x.sack.oldcumack = old_cumack;
175 sctp_clog.x.sack.tsn = tsn;
176 sctp_clog.x.sack.numGaps = gaps;
177 sctp_clog.x.sack.numDups = dups;
178 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
181 sctp_clog.x.misc.log1,
182 sctp_clog.x.misc.log2,
183 sctp_clog.x.misc.log3,
184 sctp_clog.x.misc.log4);
188 sctp_log_map(uint32_t map, uint32_t cum, uint32_t high, int from)
190 struct sctp_cwnd_log sctp_clog;
192 memset(&sctp_clog, 0, sizeof(sctp_clog));
193 sctp_clog.x.map.base = map;
194 sctp_clog.x.map.cum = cum;
195 sctp_clog.x.map.high = high;
196 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
199 sctp_clog.x.misc.log1,
200 sctp_clog.x.misc.log2,
201 sctp_clog.x.misc.log3,
202 sctp_clog.x.misc.log4);
206 sctp_log_fr(uint32_t biggest_tsn, uint32_t biggest_new_tsn, uint32_t tsn,
209 struct sctp_cwnd_log sctp_clog;
211 memset(&sctp_clog, 0, sizeof(sctp_clog));
212 sctp_clog.x.fr.largest_tsn = biggest_tsn;
213 sctp_clog.x.fr.largest_new_tsn = biggest_new_tsn;
214 sctp_clog.x.fr.tsn = tsn;
215 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
218 sctp_clog.x.misc.log1,
219 sctp_clog.x.misc.log2,
220 sctp_clog.x.misc.log3,
221 sctp_clog.x.misc.log4);
227 sctp_log_mb(struct mbuf *m, int from)
229 struct sctp_cwnd_log sctp_clog;
231 sctp_clog.x.mb.mp = m;
232 sctp_clog.x.mb.mbuf_flags = (uint8_t) (SCTP_BUF_GET_FLAGS(m));
233 sctp_clog.x.mb.size = (uint16_t) (SCTP_BUF_LEN(m));
234 sctp_clog.x.mb.data = SCTP_BUF_AT(m, 0);
235 if (SCTP_BUF_IS_EXTENDED(m)) {
236 sctp_clog.x.mb.ext = SCTP_BUF_EXTEND_BASE(m);
237 sctp_clog.x.mb.refcnt = (uint8_t) (SCTP_BUF_EXTEND_REFCNT(m));
239 sctp_clog.x.mb.ext = 0;
240 sctp_clog.x.mb.refcnt = 0;
242 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
245 sctp_clog.x.misc.log1,
246 sctp_clog.x.misc.log2,
247 sctp_clog.x.misc.log3,
248 sctp_clog.x.misc.log4);
253 sctp_log_strm_del(struct sctp_queued_to_read *control, struct sctp_queued_to_read *poschk,
256 struct sctp_cwnd_log sctp_clog;
258 if (control == NULL) {
259 SCTP_PRINTF("Gak log of NULL?\n");
262 sctp_clog.x.strlog.stcb = control->stcb;
263 sctp_clog.x.strlog.n_tsn = control->sinfo_tsn;
264 sctp_clog.x.strlog.n_sseq = control->sinfo_ssn;
265 sctp_clog.x.strlog.strm = control->sinfo_stream;
266 if (poschk != NULL) {
267 sctp_clog.x.strlog.e_tsn = poschk->sinfo_tsn;
268 sctp_clog.x.strlog.e_sseq = poschk->sinfo_ssn;
270 sctp_clog.x.strlog.e_tsn = 0;
271 sctp_clog.x.strlog.e_sseq = 0;
273 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
276 sctp_clog.x.misc.log1,
277 sctp_clog.x.misc.log2,
278 sctp_clog.x.misc.log3,
279 sctp_clog.x.misc.log4);
284 sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *net, int augment, uint8_t from)
286 struct sctp_cwnd_log sctp_clog;
288 sctp_clog.x.cwnd.net = net;
289 if (stcb->asoc.send_queue_cnt > 255)
290 sctp_clog.x.cwnd.cnt_in_send = 255;
292 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
293 if (stcb->asoc.stream_queue_cnt > 255)
294 sctp_clog.x.cwnd.cnt_in_str = 255;
296 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
299 sctp_clog.x.cwnd.cwnd_new_value = net->cwnd;
300 sctp_clog.x.cwnd.inflight = net->flight_size;
301 sctp_clog.x.cwnd.pseudo_cumack = net->pseudo_cumack;
302 sctp_clog.x.cwnd.meets_pseudo_cumack = net->new_pseudo_cumack;
303 sctp_clog.x.cwnd.need_new_pseudo_cumack = net->find_pseudo_cumack;
305 if (SCTP_CWNDLOG_PRESEND == from) {
306 sctp_clog.x.cwnd.meets_pseudo_cumack = stcb->asoc.peers_rwnd;
308 sctp_clog.x.cwnd.cwnd_augment = augment;
309 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
312 sctp_clog.x.misc.log1,
313 sctp_clog.x.misc.log2,
314 sctp_clog.x.misc.log3,
315 sctp_clog.x.misc.log4);
320 sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from)
322 struct sctp_cwnd_log sctp_clog;
324 memset(&sctp_clog, 0, sizeof(sctp_clog));
326 sctp_clog.x.lock.sock = (void *)inp->sctp_socket;
329 sctp_clog.x.lock.sock = (void *)NULL;
331 sctp_clog.x.lock.inp = (void *)inp;
333 sctp_clog.x.lock.tcb_lock = mtx_owned(&stcb->tcb_mtx);
335 sctp_clog.x.lock.tcb_lock = SCTP_LOCK_UNKNOWN;
338 sctp_clog.x.lock.inp_lock = mtx_owned(&inp->inp_mtx);
339 sctp_clog.x.lock.create_lock = mtx_owned(&inp->inp_create_mtx);
341 sctp_clog.x.lock.inp_lock = SCTP_LOCK_UNKNOWN;
342 sctp_clog.x.lock.create_lock = SCTP_LOCK_UNKNOWN;
344 sctp_clog.x.lock.info_lock = rw_wowned(&SCTP_BASE_INFO(ipi_ep_mtx));
345 if (inp && (inp->sctp_socket)) {
346 sctp_clog.x.lock.sock_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
347 sctp_clog.x.lock.sockrcvbuf_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
348 sctp_clog.x.lock.socksndbuf_lock = mtx_owned(&(inp->sctp_socket->so_snd.sb_mtx));
350 sctp_clog.x.lock.sock_lock = SCTP_LOCK_UNKNOWN;
351 sctp_clog.x.lock.sockrcvbuf_lock = SCTP_LOCK_UNKNOWN;
352 sctp_clog.x.lock.socksndbuf_lock = SCTP_LOCK_UNKNOWN;
354 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
357 sctp_clog.x.misc.log1,
358 sctp_clog.x.misc.log2,
359 sctp_clog.x.misc.log3,
360 sctp_clog.x.misc.log4);
365 sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *net, int error, int burst, uint8_t from)
367 struct sctp_cwnd_log sctp_clog;
369 memset(&sctp_clog, 0, sizeof(sctp_clog));
370 sctp_clog.x.cwnd.net = net;
371 sctp_clog.x.cwnd.cwnd_new_value = error;
372 sctp_clog.x.cwnd.inflight = net->flight_size;
373 sctp_clog.x.cwnd.cwnd_augment = burst;
374 if (stcb->asoc.send_queue_cnt > 255)
375 sctp_clog.x.cwnd.cnt_in_send = 255;
377 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
378 if (stcb->asoc.stream_queue_cnt > 255)
379 sctp_clog.x.cwnd.cnt_in_str = 255;
381 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
382 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
383 SCTP_LOG_EVENT_MAXBURST,
385 sctp_clog.x.misc.log1,
386 sctp_clog.x.misc.log2,
387 sctp_clog.x.misc.log3,
388 sctp_clog.x.misc.log4);
393 sctp_log_rwnd(uint8_t from, uint32_t peers_rwnd, uint32_t snd_size, uint32_t overhead)
395 struct sctp_cwnd_log sctp_clog;
397 sctp_clog.x.rwnd.rwnd = peers_rwnd;
398 sctp_clog.x.rwnd.send_size = snd_size;
399 sctp_clog.x.rwnd.overhead = overhead;
400 sctp_clog.x.rwnd.new_rwnd = 0;
401 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
404 sctp_clog.x.misc.log1,
405 sctp_clog.x.misc.log2,
406 sctp_clog.x.misc.log3,
407 sctp_clog.x.misc.log4);
411 sctp_log_rwnd_set(uint8_t from, uint32_t peers_rwnd, uint32_t flight_size, uint32_t overhead, uint32_t a_rwndval)
413 struct sctp_cwnd_log sctp_clog;
415 sctp_clog.x.rwnd.rwnd = peers_rwnd;
416 sctp_clog.x.rwnd.send_size = flight_size;
417 sctp_clog.x.rwnd.overhead = overhead;
418 sctp_clog.x.rwnd.new_rwnd = a_rwndval;
419 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
422 sctp_clog.x.misc.log1,
423 sctp_clog.x.misc.log2,
424 sctp_clog.x.misc.log3,
425 sctp_clog.x.misc.log4);
429 sctp_log_mbcnt(uint8_t from, uint32_t total_oq, uint32_t book, uint32_t total_mbcnt_q, uint32_t mbcnt)
431 struct sctp_cwnd_log sctp_clog;
433 sctp_clog.x.mbcnt.total_queue_size = total_oq;
434 sctp_clog.x.mbcnt.size_change = book;
435 sctp_clog.x.mbcnt.total_queue_mb_size = total_mbcnt_q;
436 sctp_clog.x.mbcnt.mbcnt_change = mbcnt;
437 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
438 SCTP_LOG_EVENT_MBCNT,
440 sctp_clog.x.misc.log1,
441 sctp_clog.x.misc.log2,
442 sctp_clog.x.misc.log3,
443 sctp_clog.x.misc.log4);
448 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d)
450 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
457 sctp_wakeup_log(struct sctp_tcb *stcb, uint32_t cumtsn, uint32_t wake_cnt, int from)
459 struct sctp_cwnd_log sctp_clog;
461 sctp_clog.x.wake.stcb = (void *)stcb;
462 sctp_clog.x.wake.wake_cnt = wake_cnt;
463 sctp_clog.x.wake.flight = stcb->asoc.total_flight_count;
464 sctp_clog.x.wake.send_q = stcb->asoc.send_queue_cnt;
465 sctp_clog.x.wake.sent_q = stcb->asoc.sent_queue_cnt;
467 if (stcb->asoc.stream_queue_cnt < 0xff)
468 sctp_clog.x.wake.stream_qcnt = (uint8_t) stcb->asoc.stream_queue_cnt;
470 sctp_clog.x.wake.stream_qcnt = 0xff;
472 if (stcb->asoc.chunks_on_out_queue < 0xff)
473 sctp_clog.x.wake.chunks_on_oque = (uint8_t) stcb->asoc.chunks_on_out_queue;
475 sctp_clog.x.wake.chunks_on_oque = 0xff;
477 sctp_clog.x.wake.sctpflags = 0;
478 /* set in the defered mode stuff */
479 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE)
480 sctp_clog.x.wake.sctpflags |= 1;
481 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT)
482 sctp_clog.x.wake.sctpflags |= 2;
483 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT)
484 sctp_clog.x.wake.sctpflags |= 4;
485 /* what about the sb */
486 if (stcb->sctp_socket) {
487 struct socket *so = stcb->sctp_socket;
489 sctp_clog.x.wake.sbflags = (uint8_t) ((so->so_snd.sb_flags & 0x00ff));
491 sctp_clog.x.wake.sbflags = 0xff;
493 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
496 sctp_clog.x.misc.log1,
497 sctp_clog.x.misc.log2,
498 sctp_clog.x.misc.log3,
499 sctp_clog.x.misc.log4);
504 sctp_log_block(uint8_t from, struct socket *so, struct sctp_association *asoc, int sendlen)
506 struct sctp_cwnd_log sctp_clog;
508 sctp_clog.x.blk.onsb = asoc->total_output_queue_size;
509 sctp_clog.x.blk.send_sent_qcnt = (uint16_t) (asoc->send_queue_cnt + asoc->sent_queue_cnt);
510 sctp_clog.x.blk.peer_rwnd = asoc->peers_rwnd;
511 sctp_clog.x.blk.stream_qcnt = (uint16_t) asoc->stream_queue_cnt;
512 sctp_clog.x.blk.chunks_on_oque = (uint16_t) asoc->chunks_on_out_queue;
513 sctp_clog.x.blk.flight_size = (uint16_t) (asoc->total_flight / 1024);
514 sctp_clog.x.blk.sndlen = sendlen;
515 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
516 SCTP_LOG_EVENT_BLOCK,
518 sctp_clog.x.misc.log1,
519 sctp_clog.x.misc.log2,
520 sctp_clog.x.misc.log3,
521 sctp_clog.x.misc.log4);
526 sctp_fill_stat_log(void *optval, size_t *optsize)
528 /* May need to fix this if ktrdump does not work */
532 #ifdef SCTP_AUDITING_ENABLED
533 uint8_t sctp_audit_data[SCTP_AUDIT_SIZE][2];
534 static int sctp_audit_indx = 0;
538 sctp_print_audit_report(void)
544 for (i = sctp_audit_indx; i < SCTP_AUDIT_SIZE; i++) {
545 if ((sctp_audit_data[i][0] == 0xe0) &&
546 (sctp_audit_data[i][1] == 0x01)) {
549 } else if (sctp_audit_data[i][0] == 0xf0) {
552 } else if ((sctp_audit_data[i][0] == 0xc0) &&
553 (sctp_audit_data[i][1] == 0x01)) {
557 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0],
558 (uint32_t) sctp_audit_data[i][1]);
563 for (i = 0; i < sctp_audit_indx; i++) {
564 if ((sctp_audit_data[i][0] == 0xe0) &&
565 (sctp_audit_data[i][1] == 0x01)) {
568 } else if (sctp_audit_data[i][0] == 0xf0) {
571 } else if ((sctp_audit_data[i][0] == 0xc0) &&
572 (sctp_audit_data[i][1] == 0x01)) {
576 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0],
577 (uint32_t) sctp_audit_data[i][1]);
586 sctp_auditing(int from, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
587 struct sctp_nets *net)
589 int resend_cnt, tot_out, rep, tot_book_cnt;
590 struct sctp_nets *lnet;
591 struct sctp_tmit_chunk *chk;
593 sctp_audit_data[sctp_audit_indx][0] = 0xAA;
594 sctp_audit_data[sctp_audit_indx][1] = 0x000000ff & from;
596 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
600 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
601 sctp_audit_data[sctp_audit_indx][1] = 0x01;
603 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
609 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
610 sctp_audit_data[sctp_audit_indx][1] = 0x02;
612 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
617 sctp_audit_data[sctp_audit_indx][0] = 0xA1;
618 sctp_audit_data[sctp_audit_indx][1] =
619 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
621 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
626 resend_cnt = tot_out = 0;
627 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
628 if (chk->sent == SCTP_DATAGRAM_RESEND) {
630 } else if (chk->sent < SCTP_DATAGRAM_RESEND) {
631 tot_out += chk->book_size;
635 if (resend_cnt != stcb->asoc.sent_queue_retran_cnt) {
636 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
637 sctp_audit_data[sctp_audit_indx][1] = 0xA1;
639 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
642 SCTP_PRINTF("resend_cnt:%d asoc-tot:%d\n",
643 resend_cnt, stcb->asoc.sent_queue_retran_cnt);
645 stcb->asoc.sent_queue_retran_cnt = resend_cnt;
646 sctp_audit_data[sctp_audit_indx][0] = 0xA2;
647 sctp_audit_data[sctp_audit_indx][1] =
648 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
650 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
654 if (tot_out != stcb->asoc.total_flight) {
655 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
656 sctp_audit_data[sctp_audit_indx][1] = 0xA2;
658 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
662 SCTP_PRINTF("tot_flt:%d asoc_tot:%d\n", tot_out,
663 (int)stcb->asoc.total_flight);
664 stcb->asoc.total_flight = tot_out;
666 if (tot_book_cnt != stcb->asoc.total_flight_count) {
667 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
668 sctp_audit_data[sctp_audit_indx][1] = 0xA5;
670 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
674 SCTP_PRINTF("tot_flt_book:%d\n", tot_book_cnt);
676 stcb->asoc.total_flight_count = tot_book_cnt;
679 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
680 tot_out += lnet->flight_size;
682 if (tot_out != stcb->asoc.total_flight) {
683 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
684 sctp_audit_data[sctp_audit_indx][1] = 0xA3;
686 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
690 SCTP_PRINTF("real flight:%d net total was %d\n",
691 stcb->asoc.total_flight, tot_out);
692 /* now corrective action */
693 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
696 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
697 if ((chk->whoTo == lnet) &&
698 (chk->sent < SCTP_DATAGRAM_RESEND)) {
699 tot_out += chk->book_size;
702 if (lnet->flight_size != tot_out) {
703 SCTP_PRINTF("net:%p flight was %d corrected to %d\n",
704 lnet, lnet->flight_size,
706 lnet->flight_size = tot_out;
711 sctp_print_audit_report();
716 sctp_audit_log(uint8_t ev, uint8_t fd)
719 sctp_audit_data[sctp_audit_indx][0] = ev;
720 sctp_audit_data[sctp_audit_indx][1] = fd;
722 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
730 * sctp_stop_timers_for_shutdown() should be called
731 * when entering the SHUTDOWN_SENT or SHUTDOWN_ACK_SENT
732 * state to make sure that all timers are stopped.
735 sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb)
737 struct sctp_association *asoc;
738 struct sctp_nets *net;
742 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
743 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
744 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
745 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
746 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
747 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
748 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
749 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
754 * a list of sizes based on typical mtu's, used only if next hop size not
757 static uint32_t sctp_mtu_sizes[] = {
779 * Return the largest MTU smaller than val. If there is no
780 * entry, just return val.
783 sctp_get_prev_mtu(uint32_t val)
787 if (val <= sctp_mtu_sizes[0]) {
790 for (i = 1; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
791 if (val <= sctp_mtu_sizes[i]) {
795 return (sctp_mtu_sizes[i - 1]);
799 * Return the smallest MTU larger than val. If there is no
800 * entry, just return val.
803 sctp_get_next_mtu(struct sctp_inpcb *inp, uint32_t val)
805 /* select another MTU that is just bigger than this one */
808 for (i = 0; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
809 if (val < sctp_mtu_sizes[i]) {
810 return (sctp_mtu_sizes[i]);
817 sctp_fill_random_store(struct sctp_pcb *m)
820 * Here we use the MD5/SHA-1 to hash with our good randomNumbers and
821 * our counter. The result becomes our good random numbers and we
822 * then setup to give these out. Note that we do no locking to
823 * protect this. This is ok, since if competing folks call this we
824 * will get more gobbled gook in the random store which is what we
825 * want. There is a danger that two guys will use the same random
826 * numbers, but thats ok too since that is random as well :->
829 (void)sctp_hmac(SCTP_HMAC, (uint8_t *) m->random_numbers,
830 sizeof(m->random_numbers), (uint8_t *) & m->random_counter,
831 sizeof(m->random_counter), (uint8_t *) m->random_store);
836 sctp_select_initial_TSN(struct sctp_pcb *inp)
839 * A true implementation should use random selection process to get
840 * the initial stream sequence number, using RFC1750 as a good
845 int store_at, new_store;
847 if (inp->initial_sequence_debug != 0) {
850 ret = inp->initial_sequence_debug;
851 inp->initial_sequence_debug++;
855 store_at = inp->store_at;
856 new_store = store_at + sizeof(uint32_t);
857 if (new_store >= (SCTP_SIGNATURE_SIZE - 3)) {
860 if (!atomic_cmpset_int(&inp->store_at, store_at, new_store)) {
863 if (new_store == 0) {
864 /* Refill the random store */
865 sctp_fill_random_store(inp);
867 p = &inp->random_store[store_at];
874 sctp_select_a_tag(struct sctp_inpcb *inp, uint16_t lport, uint16_t rport, int save_in_twait)
876 uint32_t x, not_done;
879 (void)SCTP_GETTIME_TIMEVAL(&now);
882 x = sctp_select_initial_TSN(&inp->sctp_ep);
887 if (sctp_is_vtag_good(inp, x, lport, rport, &now, save_in_twait)) {
895 sctp_init_asoc(struct sctp_inpcb *m, struct sctp_tcb *stcb,
896 uint32_t override_tag, uint32_t vrf_id)
898 struct sctp_association *asoc;
901 * Anything set to zero is taken care of by the allocation routine's
906 * Up front select what scoping to apply on addresses I tell my peer
907 * Not sure what to do with these right now, we will need to come up
908 * with a way to set them. We may need to pass them through from the
909 * caller in the sctp_aloc_assoc() function.
914 /* init all variables to a known value. */
915 SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_INUSE);
916 asoc->max_burst = m->sctp_ep.max_burst;
917 asoc->fr_max_burst = m->sctp_ep.fr_max_burst;
918 asoc->heart_beat_delay = TICKS_TO_MSEC(m->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
919 asoc->cookie_life = m->sctp_ep.def_cookie_life;
920 asoc->sctp_cmt_on_off = m->sctp_cmt_on_off;
921 asoc->ecn_allowed = m->sctp_ecn_enable;
922 asoc->sctp_nr_sack_on_off = (uint8_t) SCTP_BASE_SYSCTL(sctp_nr_sack_on_off);
923 asoc->sctp_cmt_pf = (uint8_t) 0;
924 asoc->sctp_frag_point = m->sctp_frag_point;
925 asoc->sctp_features = m->sctp_features;
926 asoc->default_dscp = m->sctp_ep.default_dscp;
928 if (m->sctp_ep.default_flowlabel) {
929 asoc->default_flowlabel = m->sctp_ep.default_flowlabel;
931 if (m->ip_inp.inp.inp_flags & IN6P_AUTOFLOWLABEL) {
932 asoc->default_flowlabel = sctp_select_initial_TSN(&m->sctp_ep);
933 asoc->default_flowlabel &= 0x000fffff;
934 asoc->default_flowlabel |= 0x80000000;
936 asoc->default_flowlabel = 0;
940 asoc->sb_send_resv = 0;
942 asoc->my_vtag = override_tag;
944 asoc->my_vtag = sctp_select_a_tag(m, stcb->sctp_ep->sctp_lport, stcb->rport, 1);
946 /* Get the nonce tags */
947 asoc->my_vtag_nonce = sctp_select_a_tag(m, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
948 asoc->peer_vtag_nonce = sctp_select_a_tag(m, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
949 asoc->vrf_id = vrf_id;
951 #ifdef SCTP_ASOCLOG_OF_TSNS
953 asoc->tsn_out_at = 0;
954 asoc->tsn_in_wrapped = 0;
955 asoc->tsn_out_wrapped = 0;
956 asoc->cumack_log_at = 0;
957 asoc->cumack_log_atsnt = 0;
959 #ifdef SCTP_FS_SPEC_LOG
963 asoc->assoc_up_sent = 0;
964 asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number = asoc->sending_seq =
965 sctp_select_initial_TSN(&m->sctp_ep);
966 asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1;
967 /* we are optimisitic here */
968 asoc->peer_supports_pktdrop = 1;
969 asoc->peer_supports_nat = 0;
970 asoc->sent_queue_retran_cnt = 0;
973 asoc->last_net_cmt_send_started = NULL;
975 /* This will need to be adjusted */
976 asoc->last_acked_seq = asoc->init_seq_number - 1;
977 asoc->advanced_peer_ack_point = asoc->last_acked_seq;
978 asoc->asconf_seq_in = asoc->last_acked_seq;
980 /* here we are different, we hold the next one we expect */
981 asoc->str_reset_seq_in = asoc->last_acked_seq + 1;
983 asoc->initial_init_rto_max = m->sctp_ep.initial_init_rto_max;
984 asoc->initial_rto = m->sctp_ep.initial_rto;
986 asoc->max_init_times = m->sctp_ep.max_init_times;
987 asoc->max_send_times = m->sctp_ep.max_send_times;
988 asoc->def_net_failure = m->sctp_ep.def_net_failure;
989 asoc->def_net_pf_threshold = m->sctp_ep.def_net_pf_threshold;
990 asoc->free_chunk_cnt = 0;
992 asoc->iam_blocking = 0;
994 asoc->context = m->sctp_context;
995 asoc->def_send = m->def_send;
996 asoc->delayed_ack = TICKS_TO_MSEC(m->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
997 asoc->sack_freq = m->sctp_ep.sctp_sack_freq;
998 asoc->pr_sctp_cnt = 0;
999 asoc->total_output_queue_size = 0;
1001 if (m->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1002 struct in6pcb *inp6;
1004 /* Its a V6 socket */
1005 inp6 = (struct in6pcb *)m;
1006 asoc->ipv6_addr_legal = 1;
1007 /* Now look at the binding flag to see if V4 will be legal */
1008 if (SCTP_IPV6_V6ONLY(inp6) == 0) {
1009 asoc->ipv4_addr_legal = 1;
1011 /* V4 addresses are NOT legal on the association */
1012 asoc->ipv4_addr_legal = 0;
1015 /* Its a V4 socket, no - V6 */
1016 asoc->ipv4_addr_legal = 1;
1017 asoc->ipv6_addr_legal = 0;
1020 asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(m->sctp_socket), SCTP_MINIMAL_RWND);
1021 asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(m->sctp_socket);
1023 asoc->smallest_mtu = m->sctp_frag_point;
1024 asoc->minrto = m->sctp_ep.sctp_minrto;
1025 asoc->maxrto = m->sctp_ep.sctp_maxrto;
1027 asoc->locked_on_sending = NULL;
1028 asoc->stream_locked_on = 0;
1029 asoc->ecn_echo_cnt_onq = 0;
1030 asoc->stream_locked = 0;
1032 asoc->send_sack = 1;
1034 LIST_INIT(&asoc->sctp_restricted_addrs);
1036 TAILQ_INIT(&asoc->nets);
1037 TAILQ_INIT(&asoc->pending_reply_queue);
1038 TAILQ_INIT(&asoc->asconf_ack_sent);
1039 /* Setup to fill the hb random cache at first HB */
1040 asoc->hb_random_idx = 4;
1042 asoc->sctp_autoclose_ticks = m->sctp_ep.auto_close_time;
1044 stcb->asoc.congestion_control_module = m->sctp_ep.sctp_default_cc_module;
1045 stcb->asoc.cc_functions = sctp_cc_functions[m->sctp_ep.sctp_default_cc_module];
1047 stcb->asoc.stream_scheduling_module = m->sctp_ep.sctp_default_ss_module;
1048 stcb->asoc.ss_functions = sctp_ss_functions[m->sctp_ep.sctp_default_ss_module];
1051 * Now the stream parameters, here we allocate space for all streams
1052 * that we request by default.
1054 asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams =
1055 m->sctp_ep.pre_open_stream_count;
1056 SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *,
1057 asoc->streamoutcnt * sizeof(struct sctp_stream_out),
1059 if (asoc->strmout == NULL) {
1060 /* big trouble no memory */
1061 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1064 for (i = 0; i < asoc->streamoutcnt; i++) {
1066 * inbound side must be set to 0xffff, also NOTE when we get
1067 * the INIT-ACK back (for INIT sender) we MUST reduce the
1068 * count (streamoutcnt) but first check if we sent to any of
1069 * the upper streams that were dropped (if some were). Those
1070 * that were dropped must be notified to the upper layer as
1073 asoc->strmout[i].next_sequence_sent = 0x0;
1074 TAILQ_INIT(&asoc->strmout[i].outqueue);
1075 asoc->strmout[i].stream_no = i;
1076 asoc->strmout[i].last_msg_incomplete = 0;
1077 asoc->ss_functions.sctp_ss_init_stream(&asoc->strmout[i], NULL);
1079 asoc->ss_functions.sctp_ss_init(stcb, asoc, 0);
1081 /* Now the mapping array */
1082 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
1083 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size,
1085 if (asoc->mapping_array == NULL) {
1086 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1087 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1090 memset(asoc->mapping_array, 0, asoc->mapping_array_size);
1091 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size,
1093 if (asoc->nr_mapping_array == NULL) {
1094 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1095 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1096 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1099 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size);
1101 /* Now the init of the other outqueues */
1102 TAILQ_INIT(&asoc->free_chunks);
1103 TAILQ_INIT(&asoc->control_send_queue);
1104 TAILQ_INIT(&asoc->asconf_send_queue);
1105 TAILQ_INIT(&asoc->send_queue);
1106 TAILQ_INIT(&asoc->sent_queue);
1107 TAILQ_INIT(&asoc->reasmqueue);
1108 TAILQ_INIT(&asoc->resetHead);
1109 asoc->max_inbound_streams = m->sctp_ep.max_open_streams_intome;
1110 TAILQ_INIT(&asoc->asconf_queue);
1111 /* authentication fields */
1112 asoc->authinfo.random = NULL;
1113 asoc->authinfo.active_keyid = 0;
1114 asoc->authinfo.assoc_key = NULL;
1115 asoc->authinfo.assoc_keyid = 0;
1116 asoc->authinfo.recv_key = NULL;
1117 asoc->authinfo.recv_keyid = 0;
1118 LIST_INIT(&asoc->shared_keys);
1119 asoc->marked_retrans = 0;
1123 asoc->timoshutdown = 0;
1124 asoc->timoheartbeat = 0;
1125 asoc->timocookie = 0;
1126 asoc->timoshutdownack = 0;
1127 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time);
1128 asoc->discontinuity_time = asoc->start_time;
1130 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and
1131 * freed later when the association is freed.
1137 sctp_print_mapping_array(struct sctp_association *asoc)
1139 unsigned int i, limit;
1141 printf("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n",
1142 asoc->mapping_array_size,
1143 asoc->mapping_array_base_tsn,
1144 asoc->cumulative_tsn,
1145 asoc->highest_tsn_inside_map,
1146 asoc->highest_tsn_inside_nr_map);
1147 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1148 if (asoc->mapping_array[limit - 1]) {
1152 printf("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->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1158 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1159 if (asoc->nr_mapping_array[limit - 1]) {
1163 printf("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1164 for (i = 0; i < limit; i++) {
1165 printf("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1172 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
1174 /* mapping array needs to grow */
1175 uint8_t *new_array1, *new_array2;
1178 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR);
1179 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP);
1180 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP);
1181 if ((new_array1 == NULL) || (new_array2 == NULL)) {
1182 /* can't get more, forget it */
1183 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size);
1185 SCTP_FREE(new_array1, SCTP_M_MAP);
1188 SCTP_FREE(new_array2, SCTP_M_MAP);
1192 memset(new_array1, 0, new_size);
1193 memset(new_array2, 0, new_size);
1194 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size);
1195 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size);
1196 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1197 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
1198 asoc->mapping_array = new_array1;
1199 asoc->nr_mapping_array = new_array2;
1200 asoc->mapping_array_size = new_size;
1206 sctp_iterator_work(struct sctp_iterator *it)
1208 int iteration_count = 0;
1211 struct sctp_inpcb *tinp;
1213 SCTP_INP_INFO_RLOCK();
1214 SCTP_ITERATOR_LOCK();
1216 SCTP_INP_RLOCK(it->inp);
1217 SCTP_INP_DECR_REF(it->inp);
1219 if (it->inp == NULL) {
1220 /* iterator is complete */
1222 SCTP_ITERATOR_UNLOCK();
1223 SCTP_INP_INFO_RUNLOCK();
1224 if (it->function_atend != NULL) {
1225 (*it->function_atend) (it->pointer, it->val);
1227 SCTP_FREE(it, SCTP_M_ITER);
1234 SCTP_INP_RLOCK(it->inp);
1236 while (((it->pcb_flags) &&
1237 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) ||
1238 ((it->pcb_features) &&
1239 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) {
1240 /* endpoint flags or features don't match, so keep looking */
1241 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1242 SCTP_INP_RUNLOCK(it->inp);
1243 goto done_with_iterator;
1246 it->inp = LIST_NEXT(it->inp, sctp_list);
1247 SCTP_INP_RUNLOCK(tinp);
1248 if (it->inp == NULL) {
1249 goto done_with_iterator;
1251 SCTP_INP_RLOCK(it->inp);
1253 /* now go through each assoc which is in the desired state */
1254 if (it->done_current_ep == 0) {
1255 if (it->function_inp != NULL)
1256 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val);
1257 it->done_current_ep = 1;
1259 if (it->stcb == NULL) {
1260 /* run the per instance function */
1261 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list);
1263 if ((inp_skip) || it->stcb == NULL) {
1264 if (it->function_inp_end != NULL) {
1265 inp_skip = (*it->function_inp_end) (it->inp,
1269 SCTP_INP_RUNLOCK(it->inp);
1273 SCTP_TCB_LOCK(it->stcb);
1274 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) {
1275 /* not in the right state... keep looking */
1276 SCTP_TCB_UNLOCK(it->stcb);
1279 /* see if we have limited out the iterator loop */
1281 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) {
1282 /* Pause to let others grab the lock */
1283 atomic_add_int(&it->stcb->asoc.refcnt, 1);
1284 SCTP_TCB_UNLOCK(it->stcb);
1285 SCTP_INP_INCR_REF(it->inp);
1286 SCTP_INP_RUNLOCK(it->inp);
1287 SCTP_ITERATOR_UNLOCK();
1288 SCTP_INP_INFO_RUNLOCK();
1289 SCTP_INP_INFO_RLOCK();
1290 SCTP_ITERATOR_LOCK();
1291 if (sctp_it_ctl.iterator_flags) {
1292 /* We won't be staying here */
1293 SCTP_INP_DECR_REF(it->inp);
1294 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1295 if (sctp_it_ctl.iterator_flags &
1296 SCTP_ITERATOR_STOP_CUR_IT) {
1297 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT;
1298 goto done_with_iterator;
1300 if (sctp_it_ctl.iterator_flags &
1301 SCTP_ITERATOR_STOP_CUR_INP) {
1302 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP;
1305 /* If we reach here huh? */
1306 printf("Unknown it ctl flag %x\n",
1307 sctp_it_ctl.iterator_flags);
1308 sctp_it_ctl.iterator_flags = 0;
1310 SCTP_INP_RLOCK(it->inp);
1311 SCTP_INP_DECR_REF(it->inp);
1312 SCTP_TCB_LOCK(it->stcb);
1313 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1314 iteration_count = 0;
1316 /* run function on this one */
1317 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val);
1320 * we lie here, it really needs to have its own type but
1321 * first I must verify that this won't effect things :-0
1323 if (it->no_chunk_output == 0)
1324 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1326 SCTP_TCB_UNLOCK(it->stcb);
1328 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist);
1329 if (it->stcb == NULL) {
1330 /* Run last function */
1331 if (it->function_inp_end != NULL) {
1332 inp_skip = (*it->function_inp_end) (it->inp,
1338 SCTP_INP_RUNLOCK(it->inp);
1340 /* done with all assocs on this endpoint, move on to next endpoint */
1341 it->done_current_ep = 0;
1342 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1345 it->inp = LIST_NEXT(it->inp, sctp_list);
1347 if (it->inp == NULL) {
1348 goto done_with_iterator;
1350 goto select_a_new_ep;
1354 sctp_iterator_worker(void)
1356 struct sctp_iterator *it, *nit;
1358 /* This function is called with the WQ lock in place */
1360 sctp_it_ctl.iterator_running = 1;
1361 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
1362 sctp_it_ctl.cur_it = it;
1363 /* now lets work on this one */
1364 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
1365 SCTP_IPI_ITERATOR_WQ_UNLOCK();
1366 CURVNET_SET(it->vn);
1367 sctp_iterator_work(it);
1368 sctp_it_ctl.cur_it = NULL;
1370 SCTP_IPI_ITERATOR_WQ_LOCK();
1371 /* sa_ignore FREED_MEMORY */
1373 sctp_it_ctl.iterator_running = 0;
1379 sctp_handle_addr_wq(void)
1381 /* deal with the ADDR wq from the rtsock calls */
1382 struct sctp_laddr *wi, *nwi;
1383 struct sctp_asconf_iterator *asc;
1385 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
1386 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT);
1388 /* Try later, no memory */
1389 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
1390 (struct sctp_inpcb *)NULL,
1391 (struct sctp_tcb *)NULL,
1392 (struct sctp_nets *)NULL);
1395 LIST_INIT(&asc->list_of_work);
1398 SCTP_WQ_ADDR_LOCK();
1399 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
1400 LIST_REMOVE(wi, sctp_nxt_addr);
1401 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
1404 SCTP_WQ_ADDR_UNLOCK();
1406 if (asc->cnt == 0) {
1407 SCTP_FREE(asc, SCTP_M_ASC_IT);
1409 (void)sctp_initiate_iterator(sctp_asconf_iterator_ep,
1410 sctp_asconf_iterator_stcb,
1411 NULL, /* No ep end for boundall */
1412 SCTP_PCB_FLAGS_BOUNDALL,
1413 SCTP_PCB_ANY_FEATURES,
1414 SCTP_ASOC_ANY_STATE,
1416 sctp_asconf_iterator_end, NULL, 0);
1424 sctp_timeout_handler(void *t)
1426 struct sctp_inpcb *inp;
1427 struct sctp_tcb *stcb;
1428 struct sctp_nets *net;
1429 struct sctp_timer *tmr;
1431 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1435 int did_output, type;
1437 tmr = (struct sctp_timer *)t;
1438 inp = (struct sctp_inpcb *)tmr->ep;
1439 stcb = (struct sctp_tcb *)tmr->tcb;
1440 net = (struct sctp_nets *)tmr->net;
1441 CURVNET_SET((struct vnet *)tmr->vnet);
1444 #ifdef SCTP_AUDITING_ENABLED
1445 sctp_audit_log(0xF0, (uint8_t) tmr->type);
1446 sctp_auditing(3, inp, stcb, net);
1449 /* sanity checks... */
1450 if (tmr->self != (void *)tmr) {
1452 * SCTP_PRINTF("Stale SCTP timer fired (%p), ignoring...\n",
1458 tmr->stopped_from = 0xa001;
1459 if (!SCTP_IS_TIMER_TYPE_VALID(tmr->type)) {
1461 * SCTP_PRINTF("SCTP timer fired with invalid type: 0x%x\n",
1467 tmr->stopped_from = 0xa002;
1468 if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) {
1472 /* if this is an iterator timeout, get the struct and clear inp */
1473 tmr->stopped_from = 0xa003;
1476 SCTP_INP_INCR_REF(inp);
1477 if ((inp->sctp_socket == 0) &&
1478 ((tmr->type != SCTP_TIMER_TYPE_INPKILL) &&
1479 (tmr->type != SCTP_TIMER_TYPE_INIT) &&
1480 (tmr->type != SCTP_TIMER_TYPE_SEND) &&
1481 (tmr->type != SCTP_TIMER_TYPE_RECV) &&
1482 (tmr->type != SCTP_TIMER_TYPE_HEARTBEAT) &&
1483 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) &&
1484 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) &&
1485 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) &&
1486 (tmr->type != SCTP_TIMER_TYPE_ASOCKILL))
1488 SCTP_INP_DECR_REF(inp);
1493 tmr->stopped_from = 0xa004;
1495 atomic_add_int(&stcb->asoc.refcnt, 1);
1496 if (stcb->asoc.state == 0) {
1497 atomic_add_int(&stcb->asoc.refcnt, -1);
1499 SCTP_INP_DECR_REF(inp);
1505 tmr->stopped_from = 0xa005;
1506 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", tmr->type);
1507 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1509 SCTP_INP_DECR_REF(inp);
1512 atomic_add_int(&stcb->asoc.refcnt, -1);
1517 tmr->stopped_from = 0xa006;
1520 SCTP_TCB_LOCK(stcb);
1521 atomic_add_int(&stcb->asoc.refcnt, -1);
1522 if ((tmr->type != SCTP_TIMER_TYPE_ASOCKILL) &&
1523 ((stcb->asoc.state == 0) ||
1524 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
1525 SCTP_TCB_UNLOCK(stcb);
1527 SCTP_INP_DECR_REF(inp);
1533 /* record in stopped what t-o occured */
1534 tmr->stopped_from = tmr->type;
1536 /* mark as being serviced now */
1537 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
1539 * Callout has been rescheduled.
1543 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1545 * Not active, so no action.
1549 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
1551 /* call the handler for the appropriate timer type */
1552 switch (tmr->type) {
1553 case SCTP_TIMER_TYPE_ZERO_COPY:
1557 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1558 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
1561 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1565 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1566 SCTP_ZERO_COPY_SENDQ_EVENT(inp, inp->sctp_socket);
1569 case SCTP_TIMER_TYPE_ADDR_WQ:
1570 sctp_handle_addr_wq();
1572 case SCTP_TIMER_TYPE_SEND:
1573 if ((stcb == NULL) || (inp == NULL)) {
1576 SCTP_STAT_INCR(sctps_timodata);
1577 stcb->asoc.timodata++;
1578 stcb->asoc.num_send_timers_up--;
1579 if (stcb->asoc.num_send_timers_up < 0) {
1580 stcb->asoc.num_send_timers_up = 0;
1582 SCTP_TCB_LOCK_ASSERT(stcb);
1583 cur_oerr = stcb->asoc.overall_error_count;
1584 retcode = sctp_t3rxt_timer(inp, stcb, net);
1586 /* no need to unlock on tcb its gone */
1590 SCTP_TCB_LOCK_ASSERT(stcb);
1591 #ifdef SCTP_AUDITING_ENABLED
1592 sctp_auditing(4, inp, stcb, net);
1594 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1595 if ((stcb->asoc.num_send_timers_up == 0) &&
1596 (stcb->asoc.sent_queue_cnt > 0)) {
1597 struct sctp_tmit_chunk *chk;
1600 * safeguard. If there on some on the sent queue
1601 * somewhere but no timers running something is
1602 * wrong... so we start a timer on the first chunk
1603 * on the send queue on whatever net it is sent to.
1605 chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
1606 sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb,
1610 case SCTP_TIMER_TYPE_INIT:
1611 if ((stcb == NULL) || (inp == NULL)) {
1614 SCTP_STAT_INCR(sctps_timoinit);
1615 stcb->asoc.timoinit++;
1616 if (sctp_t1init_timer(inp, stcb, net)) {
1617 /* no need to unlock on tcb its gone */
1620 /* We do output but not here */
1623 case SCTP_TIMER_TYPE_RECV:
1624 if ((stcb == NULL) || (inp == NULL)) {
1627 SCTP_STAT_INCR(sctps_timosack);
1628 stcb->asoc.timosack++;
1629 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
1630 #ifdef SCTP_AUDITING_ENABLED
1631 sctp_auditing(4, inp, stcb, net);
1633 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
1635 case SCTP_TIMER_TYPE_SHUTDOWN:
1636 if ((stcb == NULL) || (inp == NULL)) {
1639 if (sctp_shutdown_timer(inp, stcb, net)) {
1640 /* no need to unlock on tcb its gone */
1643 SCTP_STAT_INCR(sctps_timoshutdown);
1644 stcb->asoc.timoshutdown++;
1645 #ifdef SCTP_AUDITING_ENABLED
1646 sctp_auditing(4, inp, stcb, net);
1648 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
1650 case SCTP_TIMER_TYPE_HEARTBEAT:
1651 if ((stcb == NULL) || (inp == NULL) || (net == NULL)) {
1654 SCTP_STAT_INCR(sctps_timoheartbeat);
1655 stcb->asoc.timoheartbeat++;
1656 if (sctp_heartbeat_timer(inp, stcb, net)) {
1657 /* no need to unlock on tcb its gone */
1660 #ifdef SCTP_AUDITING_ENABLED
1661 sctp_auditing(4, inp, stcb, net);
1663 if (!(net->dest_state & SCTP_ADDR_NOHB)) {
1664 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
1665 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
1668 case SCTP_TIMER_TYPE_COOKIE:
1669 if ((stcb == NULL) || (inp == NULL)) {
1672 if (sctp_cookie_timer(inp, stcb, net)) {
1673 /* no need to unlock on tcb its gone */
1676 SCTP_STAT_INCR(sctps_timocookie);
1677 stcb->asoc.timocookie++;
1678 #ifdef SCTP_AUDITING_ENABLED
1679 sctp_auditing(4, inp, stcb, net);
1682 * We consider T3 and Cookie timer pretty much the same with
1683 * respect to where from in chunk_output.
1685 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1687 case SCTP_TIMER_TYPE_NEWCOOKIE:
1695 SCTP_STAT_INCR(sctps_timosecret);
1696 (void)SCTP_GETTIME_TIMEVAL(&tv);
1697 SCTP_INP_WLOCK(inp);
1698 inp->sctp_ep.time_of_secret_change = tv.tv_sec;
1699 inp->sctp_ep.last_secret_number =
1700 inp->sctp_ep.current_secret_number;
1701 inp->sctp_ep.current_secret_number++;
1702 if (inp->sctp_ep.current_secret_number >=
1703 SCTP_HOW_MANY_SECRETS) {
1704 inp->sctp_ep.current_secret_number = 0;
1706 secret = (int)inp->sctp_ep.current_secret_number;
1707 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
1708 inp->sctp_ep.secret_key[secret][i] =
1709 sctp_select_initial_TSN(&inp->sctp_ep);
1711 SCTP_INP_WUNLOCK(inp);
1712 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net);
1716 case SCTP_TIMER_TYPE_PATHMTURAISE:
1717 if ((stcb == NULL) || (inp == NULL)) {
1720 SCTP_STAT_INCR(sctps_timopathmtu);
1721 sctp_pathmtu_timer(inp, stcb, net);
1724 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1725 if ((stcb == NULL) || (inp == NULL)) {
1728 if (sctp_shutdownack_timer(inp, stcb, net)) {
1729 /* no need to unlock on tcb its gone */
1732 SCTP_STAT_INCR(sctps_timoshutdownack);
1733 stcb->asoc.timoshutdownack++;
1734 #ifdef SCTP_AUDITING_ENABLED
1735 sctp_auditing(4, inp, stcb, net);
1737 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
1739 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1740 if ((stcb == NULL) || (inp == NULL)) {
1743 SCTP_STAT_INCR(sctps_timoshutdownguard);
1744 sctp_abort_an_association(inp, stcb,
1745 SCTP_SHUTDOWN_GUARD_EXPIRES, NULL, SCTP_SO_NOT_LOCKED);
1746 /* no need to unlock on tcb its gone */
1749 case SCTP_TIMER_TYPE_STRRESET:
1750 if ((stcb == NULL) || (inp == NULL)) {
1753 if (sctp_strreset_timer(inp, stcb, net)) {
1754 /* no need to unlock on tcb its gone */
1757 SCTP_STAT_INCR(sctps_timostrmrst);
1758 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
1760 case SCTP_TIMER_TYPE_ASCONF:
1761 if ((stcb == NULL) || (inp == NULL)) {
1764 if (sctp_asconf_timer(inp, stcb, net)) {
1765 /* no need to unlock on tcb its gone */
1768 SCTP_STAT_INCR(sctps_timoasconf);
1769 #ifdef SCTP_AUDITING_ENABLED
1770 sctp_auditing(4, inp, stcb, net);
1772 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
1774 case SCTP_TIMER_TYPE_PRIM_DELETED:
1775 if ((stcb == NULL) || (inp == NULL)) {
1778 sctp_delete_prim_timer(inp, stcb, net);
1779 SCTP_STAT_INCR(sctps_timodelprim);
1782 case SCTP_TIMER_TYPE_AUTOCLOSE:
1783 if ((stcb == NULL) || (inp == NULL)) {
1786 SCTP_STAT_INCR(sctps_timoautoclose);
1787 sctp_autoclose_timer(inp, stcb, net);
1788 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
1791 case SCTP_TIMER_TYPE_ASOCKILL:
1792 if ((stcb == NULL) || (inp == NULL)) {
1795 SCTP_STAT_INCR(sctps_timoassockill);
1796 /* Can we free it yet? */
1797 SCTP_INP_DECR_REF(inp);
1798 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
1799 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1800 so = SCTP_INP_SO(inp);
1801 atomic_add_int(&stcb->asoc.refcnt, 1);
1802 SCTP_TCB_UNLOCK(stcb);
1803 SCTP_SOCKET_LOCK(so, 1);
1804 SCTP_TCB_LOCK(stcb);
1805 atomic_subtract_int(&stcb->asoc.refcnt, 1);
1807 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
1808 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1809 SCTP_SOCKET_UNLOCK(so, 1);
1812 * free asoc, always unlocks (or destroy's) so prevent
1813 * duplicate unlock or unlock of a free mtx :-0
1817 case SCTP_TIMER_TYPE_INPKILL:
1818 SCTP_STAT_INCR(sctps_timoinpkill);
1823 * special case, take away our increment since WE are the
1826 SCTP_INP_DECR_REF(inp);
1827 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
1828 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
1829 SCTP_CALLED_FROM_INPKILL_TIMER);
1833 SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n",
1837 #ifdef SCTP_AUDITING_ENABLED
1838 sctp_audit_log(0xF1, (uint8_t) tmr->type);
1840 sctp_auditing(5, inp, stcb, net);
1842 if ((did_output) && stcb) {
1844 * Now we need to clean up the control chunk chain if an
1845 * ECNE is on it. It must be marked as UNSENT again so next
1846 * call will continue to send it until such time that we get
1847 * a CWR, to remove it. It is, however, less likely that we
1848 * will find a ecn echo on the chain though.
1850 sctp_fix_ecn_echo(&stcb->asoc);
1854 SCTP_TCB_UNLOCK(stcb);
1858 SCTP_INP_DECR_REF(inp);
1861 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type %d)\n",
1867 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1868 struct sctp_nets *net)
1871 struct sctp_timer *tmr;
1873 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL))
1880 SCTP_TCB_LOCK_ASSERT(stcb);
1883 case SCTP_TIMER_TYPE_ZERO_COPY:
1884 tmr = &inp->sctp_ep.zero_copy_timer;
1885 to_ticks = SCTP_ZERO_COPY_TICK_DELAY;
1887 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1888 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
1889 to_ticks = SCTP_ZERO_COPY_SENDQ_TICK_DELAY;
1891 case SCTP_TIMER_TYPE_ADDR_WQ:
1892 /* Only 1 tick away :-) */
1893 tmr = &SCTP_BASE_INFO(addr_wq_timer);
1894 to_ticks = SCTP_ADDRESS_TICK_DELAY;
1896 case SCTP_TIMER_TYPE_SEND:
1897 /* Here we use the RTO timer */
1901 if ((stcb == NULL) || (net == NULL)) {
1904 tmr = &net->rxt_timer;
1905 if (net->RTO == 0) {
1906 rto_val = stcb->asoc.initial_rto;
1910 to_ticks = MSEC_TO_TICKS(rto_val);
1913 case SCTP_TIMER_TYPE_INIT:
1915 * Here we use the INIT timer default usually about 1
1918 if ((stcb == NULL) || (net == NULL)) {
1921 tmr = &net->rxt_timer;
1922 if (net->RTO == 0) {
1923 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1925 to_ticks = MSEC_TO_TICKS(net->RTO);
1928 case SCTP_TIMER_TYPE_RECV:
1930 * Here we use the Delayed-Ack timer value from the inp
1931 * ususually about 200ms.
1936 tmr = &stcb->asoc.dack_timer;
1937 to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack);
1939 case SCTP_TIMER_TYPE_SHUTDOWN:
1940 /* Here we use the RTO of the destination. */
1941 if ((stcb == NULL) || (net == NULL)) {
1944 if (net->RTO == 0) {
1945 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1947 to_ticks = MSEC_TO_TICKS(net->RTO);
1949 tmr = &net->rxt_timer;
1951 case SCTP_TIMER_TYPE_HEARTBEAT:
1953 * the net is used here so that we can add in the RTO. Even
1954 * though we use a different timer. We also add the HB timer
1955 * PLUS a random jitter.
1957 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
1963 if ((net->dest_state & SCTP_ADDR_NOHB) &&
1964 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
1967 if (net->RTO == 0) {
1968 to_ticks = stcb->asoc.initial_rto;
1970 to_ticks = net->RTO;
1972 rndval = sctp_select_initial_TSN(&inp->sctp_ep);
1973 jitter = rndval % to_ticks;
1974 if (jitter >= (to_ticks >> 1)) {
1975 to_ticks = to_ticks + (jitter - (to_ticks >> 1));
1977 to_ticks = to_ticks - jitter;
1979 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
1980 !(net->dest_state & SCTP_ADDR_PF)) {
1981 to_ticks += net->heart_beat_delay;
1984 * Now we must convert the to_ticks that are now in
1987 to_ticks = MSEC_TO_TICKS(to_ticks);
1988 tmr = &net->hb_timer;
1991 case SCTP_TIMER_TYPE_COOKIE:
1993 * Here we can use the RTO timer from the network since one
1994 * RTT was compelete. If a retran happened then we will be
1995 * using the RTO initial value.
1997 if ((stcb == NULL) || (net == NULL)) {
2000 if (net->RTO == 0) {
2001 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2003 to_ticks = MSEC_TO_TICKS(net->RTO);
2005 tmr = &net->rxt_timer;
2007 case SCTP_TIMER_TYPE_NEWCOOKIE:
2009 * nothing needed but the endpoint here ususually about 60
2015 tmr = &inp->sctp_ep.signature_change;
2016 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
2018 case SCTP_TIMER_TYPE_ASOCKILL:
2022 tmr = &stcb->asoc.strreset_timer;
2023 to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT);
2025 case SCTP_TIMER_TYPE_INPKILL:
2027 * The inp is setup to die. We re-use the signature_chage
2028 * timer since that has stopped and we are in the GONE
2034 tmr = &inp->sctp_ep.signature_change;
2035 to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT);
2037 case SCTP_TIMER_TYPE_PATHMTURAISE:
2039 * Here we use the value found in the EP for PMTU ususually
2042 if ((stcb == NULL) || (inp == NULL)) {
2048 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
2051 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
2052 tmr = &net->pmtu_timer;
2054 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2055 /* Here we use the RTO of the destination */
2056 if ((stcb == NULL) || (net == NULL)) {
2059 if (net->RTO == 0) {
2060 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2062 to_ticks = MSEC_TO_TICKS(net->RTO);
2064 tmr = &net->rxt_timer;
2066 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2068 * Here we use the endpoints shutdown guard timer usually
2071 if ((inp == NULL) || (stcb == NULL)) {
2074 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
2075 tmr = &stcb->asoc.shut_guard_timer;
2077 case SCTP_TIMER_TYPE_STRRESET:
2079 * Here the timer comes from the stcb but its value is from
2082 if ((stcb == NULL) || (net == NULL)) {
2085 if (net->RTO == 0) {
2086 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2088 to_ticks = MSEC_TO_TICKS(net->RTO);
2090 tmr = &stcb->asoc.strreset_timer;
2092 case SCTP_TIMER_TYPE_ASCONF:
2094 * Here the timer comes from the stcb but its value is from
2097 if ((stcb == NULL) || (net == NULL)) {
2100 if (net->RTO == 0) {
2101 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2103 to_ticks = MSEC_TO_TICKS(net->RTO);
2105 tmr = &stcb->asoc.asconf_timer;
2107 case SCTP_TIMER_TYPE_PRIM_DELETED:
2108 if ((stcb == NULL) || (net != NULL)) {
2111 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2112 tmr = &stcb->asoc.delete_prim_timer;
2114 case SCTP_TIMER_TYPE_AUTOCLOSE:
2118 if (stcb->asoc.sctp_autoclose_ticks == 0) {
2120 * Really an error since stcb is NOT set to
2125 to_ticks = stcb->asoc.sctp_autoclose_ticks;
2126 tmr = &stcb->asoc.autoclose_timer;
2129 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2130 __FUNCTION__, t_type);
2134 if ((to_ticks <= 0) || (tmr == NULL)) {
2135 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n",
2136 __FUNCTION__, t_type, to_ticks, tmr);
2139 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
2141 * we do NOT allow you to have it already running. if it is
2142 * we leave the current one up unchanged
2146 /* At this point we can proceed */
2147 if (t_type == SCTP_TIMER_TYPE_SEND) {
2148 stcb->asoc.num_send_timers_up++;
2150 tmr->stopped_from = 0;
2152 tmr->ep = (void *)inp;
2153 tmr->tcb = (void *)stcb;
2154 tmr->net = (void *)net;
2155 tmr->self = (void *)tmr;
2156 tmr->vnet = (void *)curvnet;
2157 tmr->ticks = sctp_get_tick_count();
2158 (void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr);
2163 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2164 struct sctp_nets *net, uint32_t from)
2166 struct sctp_timer *tmr;
2168 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) &&
2174 SCTP_TCB_LOCK_ASSERT(stcb);
2177 case SCTP_TIMER_TYPE_ZERO_COPY:
2178 tmr = &inp->sctp_ep.zero_copy_timer;
2180 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
2181 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
2183 case SCTP_TIMER_TYPE_ADDR_WQ:
2184 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2186 case SCTP_TIMER_TYPE_SEND:
2187 if ((stcb == NULL) || (net == NULL)) {
2190 tmr = &net->rxt_timer;
2192 case SCTP_TIMER_TYPE_INIT:
2193 if ((stcb == NULL) || (net == NULL)) {
2196 tmr = &net->rxt_timer;
2198 case SCTP_TIMER_TYPE_RECV:
2202 tmr = &stcb->asoc.dack_timer;
2204 case SCTP_TIMER_TYPE_SHUTDOWN:
2205 if ((stcb == NULL) || (net == NULL)) {
2208 tmr = &net->rxt_timer;
2210 case SCTP_TIMER_TYPE_HEARTBEAT:
2211 if ((stcb == NULL) || (net == NULL)) {
2214 tmr = &net->hb_timer;
2216 case SCTP_TIMER_TYPE_COOKIE:
2217 if ((stcb == NULL) || (net == NULL)) {
2220 tmr = &net->rxt_timer;
2222 case SCTP_TIMER_TYPE_NEWCOOKIE:
2223 /* nothing needed but the endpoint here */
2224 tmr = &inp->sctp_ep.signature_change;
2226 * We re-use the newcookie timer for the INP kill timer. We
2227 * must assure that we do not kill it by accident.
2230 case SCTP_TIMER_TYPE_ASOCKILL:
2232 * Stop the asoc kill timer.
2237 tmr = &stcb->asoc.strreset_timer;
2240 case SCTP_TIMER_TYPE_INPKILL:
2242 * The inp is setup to die. We re-use the signature_chage
2243 * timer since that has stopped and we are in the GONE
2246 tmr = &inp->sctp_ep.signature_change;
2248 case SCTP_TIMER_TYPE_PATHMTURAISE:
2249 if ((stcb == NULL) || (net == NULL)) {
2252 tmr = &net->pmtu_timer;
2254 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2255 if ((stcb == NULL) || (net == NULL)) {
2258 tmr = &net->rxt_timer;
2260 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2264 tmr = &stcb->asoc.shut_guard_timer;
2266 case SCTP_TIMER_TYPE_STRRESET:
2270 tmr = &stcb->asoc.strreset_timer;
2272 case SCTP_TIMER_TYPE_ASCONF:
2276 tmr = &stcb->asoc.asconf_timer;
2278 case SCTP_TIMER_TYPE_PRIM_DELETED:
2282 tmr = &stcb->asoc.delete_prim_timer;
2284 case SCTP_TIMER_TYPE_AUTOCLOSE:
2288 tmr = &stcb->asoc.autoclose_timer;
2291 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2292 __FUNCTION__, t_type);
2298 if ((tmr->type != t_type) && tmr->type) {
2300 * Ok we have a timer that is under joint use. Cookie timer
2301 * per chance with the SEND timer. We therefore are NOT
2302 * running the timer that the caller wants stopped. So just
2307 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
2308 stcb->asoc.num_send_timers_up--;
2309 if (stcb->asoc.num_send_timers_up < 0) {
2310 stcb->asoc.num_send_timers_up = 0;
2314 tmr->stopped_from = from;
2315 (void)SCTP_OS_TIMER_STOP(&tmr->timer);
2320 sctp_calculate_len(struct mbuf *m)
2327 tlen += SCTP_BUF_LEN(at);
2328 at = SCTP_BUF_NEXT(at);
2334 sctp_mtu_size_reset(struct sctp_inpcb *inp,
2335 struct sctp_association *asoc, uint32_t mtu)
2338 * Reset the P-MTU size on this association, this involves changing
2339 * the asoc MTU, going through ANY chunk+overhead larger than mtu to
2340 * allow the DF flag to be cleared.
2342 struct sctp_tmit_chunk *chk;
2343 unsigned int eff_mtu, ovh;
2345 asoc->smallest_mtu = mtu;
2346 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2347 ovh = SCTP_MIN_OVERHEAD;
2349 ovh = SCTP_MIN_V4_OVERHEAD;
2351 eff_mtu = mtu - ovh;
2352 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
2353 if (chk->send_size > eff_mtu) {
2354 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2357 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
2358 if (chk->send_size > eff_mtu) {
2359 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2366 * given an association and starting time of the current RTT period return
2367 * RTO in number of msecs net should point to the current network
2371 sctp_calculate_rto(struct sctp_tcb *stcb,
2372 struct sctp_association *asoc,
2373 struct sctp_nets *net,
2374 struct timeval *told,
2375 int safe, int rtt_from_sack)
2378 * given an association and the starting time of the current RTT
2379 * period (in value1/value2) return RTO in number of msecs.
2381 int32_t rtt; /* RTT in ms */
2383 int first_measure = 0;
2384 struct timeval now, then, *old;
2386 /* Copy it out for sparc64 */
2387 if (safe == sctp_align_unsafe_makecopy) {
2389 memcpy(&then, told, sizeof(struct timeval));
2390 } else if (safe == sctp_align_safe_nocopy) {
2394 SCTP_PRINTF("Huh, bad rto calc call\n");
2397 /************************/
2398 /* 1. calculate new RTT */
2399 /************************/
2400 /* get the current time */
2401 if (stcb->asoc.use_precise_time) {
2402 (void)SCTP_GETPTIME_TIMEVAL(&now);
2404 (void)SCTP_GETTIME_TIMEVAL(&now);
2406 timevalsub(&now, old);
2407 /* store the current RTT in us */
2408 net->rtt = (uint64_t) 10000000 *(uint64_t) now.tv_sec +
2409 (uint64_t) now.tv_usec;
2411 /* computer rtt in ms */
2412 rtt = net->rtt / 1000;
2413 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
2415 * Tell the CC module that a new update has just occurred
2418 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
2421 * Do we need to determine the lan? We do this only on sacks i.e.
2422 * RTT being determined from data not non-data (HB/INIT->INITACK).
2424 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
2425 (net->lan_type == SCTP_LAN_UNKNOWN)) {
2426 if (net->rtt > SCTP_LOCAL_LAN_RTT) {
2427 net->lan_type = SCTP_LAN_INTERNET;
2429 net->lan_type = SCTP_LAN_LOCAL;
2432 /***************************/
2433 /* 2. update RTTVAR & SRTT */
2434 /***************************/
2436 * Compute the scaled average lastsa and the
2437 * scaled variance lastsv as described in van Jacobson
2438 * Paper "Congestion Avoidance and Control", Annex A.
2440 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
2441 * (net->lastsa >> SCTP_RTT_VAR_SHIFT) is the rttvar
2443 if (net->RTO_measured) {
2444 rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
2449 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
2451 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2452 rto_logging(net, SCTP_LOG_RTTVAR);
2455 /* First RTO measurment */
2456 net->RTO_measured = 1;
2458 net->lastsa = rtt << SCTP_RTT_SHIFT;
2459 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
2460 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2461 rto_logging(net, SCTP_LOG_INITIAL_RTT);
2464 if (net->lastsv == 0) {
2465 net->lastsv = SCTP_CLOCK_GRANULARITY;
2467 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
2468 if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
2469 (stcb->asoc.sat_network_lockout == 0)) {
2470 stcb->asoc.sat_network = 1;
2471 } else if ((!first_measure) && stcb->asoc.sat_network) {
2472 stcb->asoc.sat_network = 0;
2473 stcb->asoc.sat_network_lockout = 1;
2475 /* bound it, per C6/C7 in Section 5.3.1 */
2476 if (new_rto < stcb->asoc.minrto) {
2477 new_rto = stcb->asoc.minrto;
2479 if (new_rto > stcb->asoc.maxrto) {
2480 new_rto = stcb->asoc.maxrto;
2482 /* we are now returning the RTO */
2487 * return a pointer to a contiguous piece of data from the given mbuf chain
2488 * starting at 'off' for 'len' bytes. If the desired piece spans more than
2489 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
2490 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
2493 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t * in_ptr)
2499 if ((off < 0) || (len <= 0))
2502 /* find the desired start location */
2503 while ((m != NULL) && (off > 0)) {
2504 if (off < SCTP_BUF_LEN(m))
2506 off -= SCTP_BUF_LEN(m);
2507 m = SCTP_BUF_NEXT(m);
2512 /* is the current mbuf large enough (eg. contiguous)? */
2513 if ((SCTP_BUF_LEN(m) - off) >= len) {
2514 return (mtod(m, caddr_t)+off);
2516 /* else, it spans more than one mbuf, so save a temp copy... */
2517 while ((m != NULL) && (len > 0)) {
2518 count = min(SCTP_BUF_LEN(m) - off, len);
2519 bcopy(mtod(m, caddr_t)+off, ptr, count);
2523 m = SCTP_BUF_NEXT(m);
2525 if ((m == NULL) && (len > 0))
2528 return ((caddr_t)in_ptr);
2534 struct sctp_paramhdr *
2535 sctp_get_next_param(struct mbuf *m,
2537 struct sctp_paramhdr *pull,
2540 /* This just provides a typed signature to Peter's Pull routine */
2541 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
2547 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
2550 * add padlen bytes of 0 filled padding to the end of the mbuf. If
2551 * padlen is > 3 this routine will fail.
2557 SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
2560 if (padlen <= M_TRAILINGSPACE(m)) {
2562 * The easy way. We hope the majority of the time we hit
2565 dp = (uint8_t *) (mtod(m, caddr_t)+SCTP_BUF_LEN(m));
2566 SCTP_BUF_LEN(m) += padlen;
2568 /* Hard way we must grow the mbuf */
2571 tmp = sctp_get_mbuf_for_msg(padlen, 0, M_DONTWAIT, 1, MT_DATA);
2573 /* Out of space GAK! we are in big trouble. */
2574 SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
2577 /* setup and insert in middle */
2578 SCTP_BUF_LEN(tmp) = padlen;
2579 SCTP_BUF_NEXT(tmp) = NULL;
2580 SCTP_BUF_NEXT(m) = tmp;
2581 dp = mtod(tmp, uint8_t *);
2583 /* zero out the pad */
2584 for (i = 0; i < padlen; i++) {
2592 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
2594 /* find the last mbuf in chain and pad it */
2599 return (sctp_add_pad_tombuf(last_mbuf, padval));
2602 if (SCTP_BUF_NEXT(m_at) == NULL) {
2603 return (sctp_add_pad_tombuf(m_at, padval));
2605 m_at = SCTP_BUF_NEXT(m_at);
2608 SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
2613 sctp_notify_assoc_change(uint32_t event, struct sctp_tcb *stcb,
2614 uint32_t error, void *data, int so_locked
2615 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2620 struct mbuf *m_notify;
2621 struct sctp_assoc_change *sac;
2622 struct sctp_queued_to_read *control;
2624 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2630 * For TCP model AND UDP connected sockets we will send an error up
2631 * when an ABORT comes in.
2633 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2634 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2635 ((event == SCTP_COMM_LOST) || (event == SCTP_CANT_STR_ASSOC))) {
2636 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) {
2637 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
2638 stcb->sctp_socket->so_error = ECONNREFUSED;
2640 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
2641 stcb->sctp_socket->so_error = ECONNRESET;
2643 /* Wake ANY sleepers */
2644 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2645 so = SCTP_INP_SO(stcb->sctp_ep);
2647 atomic_add_int(&stcb->asoc.refcnt, 1);
2648 SCTP_TCB_UNLOCK(stcb);
2649 SCTP_SOCKET_LOCK(so, 1);
2650 SCTP_TCB_LOCK(stcb);
2651 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2652 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
2653 SCTP_SOCKET_UNLOCK(so, 1);
2658 socantrcvmore(stcb->sctp_socket);
2659 sorwakeup(stcb->sctp_socket);
2660 sowwakeup(stcb->sctp_socket);
2661 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2663 SCTP_SOCKET_UNLOCK(so, 1);
2667 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
2668 /* event not enabled */
2671 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_change), 0, M_DONTWAIT, 1, MT_DATA);
2672 if (m_notify == NULL)
2675 SCTP_BUF_LEN(m_notify) = 0;
2677 sac = mtod(m_notify, struct sctp_assoc_change *);
2678 sac->sac_type = SCTP_ASSOC_CHANGE;
2680 sac->sac_length = sizeof(struct sctp_assoc_change);
2681 sac->sac_state = event;
2682 sac->sac_error = error;
2683 /* XXX verify these stream counts */
2684 sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
2685 sac->sac_inbound_streams = stcb->asoc.streamincnt;
2686 sac->sac_assoc_id = sctp_get_associd(stcb);
2687 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_change);
2688 SCTP_BUF_NEXT(m_notify) = NULL;
2689 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2692 if (control == NULL) {
2694 sctp_m_freem(m_notify);
2697 control->length = SCTP_BUF_LEN(m_notify);
2698 /* not that we need this */
2699 control->tail_mbuf = m_notify;
2700 control->spec_flags = M_NOTIFICATION;
2701 sctp_add_to_readq(stcb->sctp_ep, stcb,
2703 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD,
2705 if (event == SCTP_COMM_LOST) {
2706 /* Wake up any sleeper */
2707 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2708 so = SCTP_INP_SO(stcb->sctp_ep);
2710 atomic_add_int(&stcb->asoc.refcnt, 1);
2711 SCTP_TCB_UNLOCK(stcb);
2712 SCTP_SOCKET_LOCK(so, 1);
2713 SCTP_TCB_LOCK(stcb);
2714 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2715 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
2716 SCTP_SOCKET_UNLOCK(so, 1);
2721 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
2722 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2724 SCTP_SOCKET_UNLOCK(so, 1);
2731 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
2732 struct sockaddr *sa, uint32_t error)
2734 struct mbuf *m_notify;
2735 struct sctp_paddr_change *spc;
2736 struct sctp_queued_to_read *control;
2738 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
2739 /* event not enabled */
2742 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_DONTWAIT, 1, MT_DATA);
2743 if (m_notify == NULL)
2745 SCTP_BUF_LEN(m_notify) = 0;
2746 spc = mtod(m_notify, struct sctp_paddr_change *);
2747 spc->spc_type = SCTP_PEER_ADDR_CHANGE;
2749 spc->spc_length = sizeof(struct sctp_paddr_change);
2750 switch (sa->sa_family) {
2753 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2759 struct sockaddr_in6 *sin6;
2761 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
2763 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
2764 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
2765 if (sin6->sin6_scope_id == 0) {
2766 /* recover scope_id for user */
2767 (void)sa6_recoverscope(sin6);
2769 /* clear embedded scope_id for user */
2770 in6_clearscope(&sin6->sin6_addr);
2780 spc->spc_state = state;
2781 spc->spc_error = error;
2782 spc->spc_assoc_id = sctp_get_associd(stcb);
2784 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
2785 SCTP_BUF_NEXT(m_notify) = NULL;
2787 /* append to socket */
2788 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2791 if (control == NULL) {
2793 sctp_m_freem(m_notify);
2796 control->length = SCTP_BUF_LEN(m_notify);
2797 control->spec_flags = M_NOTIFICATION;
2798 /* not that we need this */
2799 control->tail_mbuf = m_notify;
2800 sctp_add_to_readq(stcb->sctp_ep, stcb,
2802 &stcb->sctp_socket->so_rcv, 1,
2803 SCTP_READ_LOCK_NOT_HELD,
2804 SCTP_SO_NOT_LOCKED);
2809 sctp_notify_send_failed(struct sctp_tcb *stcb, uint32_t error,
2810 struct sctp_tmit_chunk *chk, int so_locked
2811 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2816 struct mbuf *m_notify;
2817 struct sctp_send_failed *ssf;
2818 struct sctp_queued_to_read *control;
2821 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT)) {
2822 /* event not enabled */
2825 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_send_failed), 0, M_DONTWAIT, 1, MT_DATA);
2826 if (m_notify == NULL)
2829 length = sizeof(struct sctp_send_failed) + chk->send_size;
2830 length -= sizeof(struct sctp_data_chunk);
2831 SCTP_BUF_LEN(m_notify) = 0;
2832 ssf = mtod(m_notify, struct sctp_send_failed *);
2833 ssf->ssf_type = SCTP_SEND_FAILED;
2834 if (error == SCTP_NOTIFY_DATAGRAM_UNSENT)
2835 ssf->ssf_flags = SCTP_DATA_UNSENT;
2837 ssf->ssf_flags = SCTP_DATA_SENT;
2838 ssf->ssf_length = length;
2839 ssf->ssf_error = error;
2840 /* not exactly what the user sent in, but should be close :) */
2841 bzero(&ssf->ssf_info, sizeof(ssf->ssf_info));
2842 ssf->ssf_info.sinfo_stream = chk->rec.data.stream_number;
2843 ssf->ssf_info.sinfo_ssn = chk->rec.data.stream_seq;
2844 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
2845 ssf->ssf_info.sinfo_ppid = chk->rec.data.payloadtype;
2846 ssf->ssf_info.sinfo_context = chk->rec.data.context;
2847 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
2848 ssf->ssf_assoc_id = sctp_get_associd(stcb);
2852 * trim off the sctp chunk header(it should be there)
2854 if (chk->send_size >= sizeof(struct sctp_data_chunk)) {
2855 m_adj(chk->data, sizeof(struct sctp_data_chunk));
2856 sctp_mbuf_crush(chk->data);
2857 chk->send_size -= sizeof(struct sctp_data_chunk);
2860 SCTP_BUF_NEXT(m_notify) = chk->data;
2861 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
2862 /* Steal off the mbuf */
2865 * For this case, we check the actual socket buffer, since the assoc
2866 * is going away we don't want to overfill the socket buffer for a
2869 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
2870 sctp_m_freem(m_notify);
2873 /* append to socket */
2874 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2877 if (control == NULL) {
2879 sctp_m_freem(m_notify);
2882 control->spec_flags = M_NOTIFICATION;
2883 sctp_add_to_readq(stcb->sctp_ep, stcb,
2885 &stcb->sctp_socket->so_rcv, 1,
2886 SCTP_READ_LOCK_NOT_HELD,
2892 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
2893 struct sctp_stream_queue_pending *sp, int so_locked
2894 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2899 struct mbuf *m_notify;
2900 struct sctp_send_failed *ssf;
2901 struct sctp_queued_to_read *control;
2904 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT)) {
2905 /* event not enabled */
2908 length = sizeof(struct sctp_send_failed) + sp->length;
2909 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_send_failed), 0, M_DONTWAIT, 1, MT_DATA);
2910 if (m_notify == NULL)
2913 SCTP_BUF_LEN(m_notify) = 0;
2914 ssf = mtod(m_notify, struct sctp_send_failed *);
2915 ssf->ssf_type = SCTP_SEND_FAILED;
2916 if (error == SCTP_NOTIFY_DATAGRAM_UNSENT)
2917 ssf->ssf_flags = SCTP_DATA_UNSENT;
2919 ssf->ssf_flags = SCTP_DATA_SENT;
2920 ssf->ssf_length = length;
2921 ssf->ssf_error = error;
2922 /* not exactly what the user sent in, but should be close :) */
2923 bzero(&ssf->ssf_info, sizeof(ssf->ssf_info));
2924 ssf->ssf_info.sinfo_stream = sp->stream;
2925 ssf->ssf_info.sinfo_ssn = sp->strseq;
2926 if (sp->some_taken) {
2927 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
2929 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
2931 ssf->ssf_info.sinfo_ppid = sp->ppid;
2932 ssf->ssf_info.sinfo_context = sp->context;
2933 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
2934 ssf->ssf_assoc_id = sctp_get_associd(stcb);
2935 SCTP_BUF_NEXT(m_notify) = sp->data;
2936 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
2938 /* Steal off the mbuf */
2941 * For this case, we check the actual socket buffer, since the assoc
2942 * is going away we don't want to overfill the socket buffer for a
2945 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
2946 sctp_m_freem(m_notify);
2949 /* append to socket */
2950 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2953 if (control == NULL) {
2955 sctp_m_freem(m_notify);
2958 control->spec_flags = M_NOTIFICATION;
2959 sctp_add_to_readq(stcb->sctp_ep, stcb,
2961 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
2967 sctp_notify_adaptation_layer(struct sctp_tcb *stcb,
2970 struct mbuf *m_notify;
2971 struct sctp_adaptation_event *sai;
2972 struct sctp_queued_to_read *control;
2974 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
2975 /* event not enabled */
2978 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_DONTWAIT, 1, MT_DATA);
2979 if (m_notify == NULL)
2982 SCTP_BUF_LEN(m_notify) = 0;
2983 sai = mtod(m_notify, struct sctp_adaptation_event *);
2984 sai->sai_type = SCTP_ADAPTATION_INDICATION;
2986 sai->sai_length = sizeof(struct sctp_adaptation_event);
2987 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
2988 sai->sai_assoc_id = sctp_get_associd(stcb);
2990 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
2991 SCTP_BUF_NEXT(m_notify) = NULL;
2993 /* append to socket */
2994 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2997 if (control == NULL) {
2999 sctp_m_freem(m_notify);
3002 control->length = SCTP_BUF_LEN(m_notify);
3003 control->spec_flags = M_NOTIFICATION;
3004 /* not that we need this */
3005 control->tail_mbuf = m_notify;
3006 sctp_add_to_readq(stcb->sctp_ep, stcb,
3008 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3011 /* This always must be called with the read-queue LOCKED in the INP */
3013 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
3014 uint32_t val, int so_locked
3015 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3020 struct mbuf *m_notify;
3021 struct sctp_pdapi_event *pdapi;
3022 struct sctp_queued_to_read *control;
3025 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
3026 /* event not enabled */
3029 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
3032 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_DONTWAIT, 1, MT_DATA);
3033 if (m_notify == NULL)
3036 SCTP_BUF_LEN(m_notify) = 0;
3037 pdapi = mtod(m_notify, struct sctp_pdapi_event *);
3038 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
3039 pdapi->pdapi_flags = 0;
3040 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
3041 pdapi->pdapi_indication = error;
3042 pdapi->pdapi_stream = (val >> 16);
3043 pdapi->pdapi_seq = (val & 0x0000ffff);
3044 pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
3046 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
3047 SCTP_BUF_NEXT(m_notify) = NULL;
3048 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3051 if (control == NULL) {
3053 sctp_m_freem(m_notify);
3056 control->spec_flags = M_NOTIFICATION;
3057 control->length = SCTP_BUF_LEN(m_notify);
3058 /* not that we need this */
3059 control->tail_mbuf = m_notify;
3060 control->held_length = 0;
3061 control->length = 0;
3062 sb = &stcb->sctp_socket->so_rcv;
3063 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3064 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
3066 sctp_sballoc(stcb, sb, m_notify);
3067 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3068 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
3070 atomic_add_int(&control->length, SCTP_BUF_LEN(m_notify));
3071 control->end_added = 1;
3072 if (stcb->asoc.control_pdapi)
3073 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
3075 /* we really should not see this case */
3076 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
3078 if (stcb->sctp_ep && stcb->sctp_socket) {
3079 /* This should always be the case */
3080 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3083 so = SCTP_INP_SO(stcb->sctp_ep);
3085 atomic_add_int(&stcb->asoc.refcnt, 1);
3086 SCTP_TCB_UNLOCK(stcb);
3087 SCTP_SOCKET_LOCK(so, 1);
3088 SCTP_TCB_LOCK(stcb);
3089 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3090 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
3091 SCTP_SOCKET_UNLOCK(so, 1);
3096 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
3097 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3099 SCTP_SOCKET_UNLOCK(so, 1);
3106 sctp_notify_shutdown_event(struct sctp_tcb *stcb)
3108 struct mbuf *m_notify;
3109 struct sctp_shutdown_event *sse;
3110 struct sctp_queued_to_read *control;
3113 * For TCP model AND UDP connected sockets we will send an error up
3114 * when an SHUTDOWN completes
3116 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3117 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3118 /* mark socket closed for read/write and wakeup! */
3119 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3122 so = SCTP_INP_SO(stcb->sctp_ep);
3123 atomic_add_int(&stcb->asoc.refcnt, 1);
3124 SCTP_TCB_UNLOCK(stcb);
3125 SCTP_SOCKET_LOCK(so, 1);
3126 SCTP_TCB_LOCK(stcb);
3127 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3128 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
3129 SCTP_SOCKET_UNLOCK(so, 1);
3133 socantsendmore(stcb->sctp_socket);
3134 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3135 SCTP_SOCKET_UNLOCK(so, 1);
3138 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
3139 /* event not enabled */
3142 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_DONTWAIT, 1, MT_DATA);
3143 if (m_notify == NULL)
3146 sse = mtod(m_notify, struct sctp_shutdown_event *);
3147 sse->sse_type = SCTP_SHUTDOWN_EVENT;
3149 sse->sse_length = sizeof(struct sctp_shutdown_event);
3150 sse->sse_assoc_id = sctp_get_associd(stcb);
3152 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
3153 SCTP_BUF_NEXT(m_notify) = NULL;
3155 /* append to socket */
3156 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3159 if (control == NULL) {
3161 sctp_m_freem(m_notify);
3164 control->spec_flags = M_NOTIFICATION;
3165 control->length = SCTP_BUF_LEN(m_notify);
3166 /* not that we need this */
3167 control->tail_mbuf = m_notify;
3168 sctp_add_to_readq(stcb->sctp_ep, stcb,
3170 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3174 sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
3176 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3181 struct mbuf *m_notify;
3182 struct sctp_sender_dry_event *event;
3183 struct sctp_queued_to_read *control;
3185 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
3186 /* event not enabled */
3189 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_DONTWAIT, 1, MT_DATA);
3190 if (m_notify == NULL) {
3194 SCTP_BUF_LEN(m_notify) = 0;
3195 event = mtod(m_notify, struct sctp_sender_dry_event *);
3196 event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
3197 event->sender_dry_flags = 0;
3198 event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
3199 event->sender_dry_assoc_id = sctp_get_associd(stcb);
3201 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
3202 SCTP_BUF_NEXT(m_notify) = NULL;
3204 /* append to socket */
3205 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3206 0, 0, 0, 0, 0, 0, m_notify);
3207 if (control == NULL) {
3209 sctp_m_freem(m_notify);
3212 control->length = SCTP_BUF_LEN(m_notify);
3213 control->spec_flags = M_NOTIFICATION;
3214 /* not that we need this */
3215 control->tail_mbuf = m_notify;
3216 sctp_add_to_readq(stcb->sctp_ep, stcb, control,
3217 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3222 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, int number_entries, int flag)
3224 struct mbuf *m_notify;
3225 struct sctp_queued_to_read *control;
3226 struct sctp_stream_reset_event *strreset;
3229 if (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_STREAM_RESETEVNT)) {
3230 /* event not enabled */
3233 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_DONTWAIT, 1, MT_DATA);
3234 if (m_notify == NULL)
3237 SCTP_BUF_LEN(m_notify) = 0;
3238 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3239 if (len > M_TRAILINGSPACE(m_notify)) {
3240 /* never enough room */
3241 sctp_m_freem(m_notify);
3244 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3245 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3246 strreset->strreset_flags = SCTP_STRRESET_ADD_STREAM | flag;
3247 strreset->strreset_length = len;
3248 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3249 strreset->strreset_list[0] = number_entries;
3251 SCTP_BUF_LEN(m_notify) = len;
3252 SCTP_BUF_NEXT(m_notify) = NULL;
3253 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3255 sctp_m_freem(m_notify);
3258 /* append to socket */
3259 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3262 if (control == NULL) {
3264 sctp_m_freem(m_notify);
3267 control->spec_flags = M_NOTIFICATION;
3268 control->length = SCTP_BUF_LEN(m_notify);
3269 /* not that we need this */
3270 control->tail_mbuf = m_notify;
3271 sctp_add_to_readq(stcb->sctp_ep, stcb,
3273 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3278 sctp_notify_stream_reset(struct sctp_tcb *stcb,
3279 int number_entries, uint16_t * list, int flag)
3281 struct mbuf *m_notify;
3282 struct sctp_queued_to_read *control;
3283 struct sctp_stream_reset_event *strreset;
3286 if (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_STREAM_RESETEVNT)) {
3287 /* event not enabled */
3290 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_DONTWAIT, 1, MT_DATA);
3291 if (m_notify == NULL)
3294 SCTP_BUF_LEN(m_notify) = 0;
3295 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3296 if (len > M_TRAILINGSPACE(m_notify)) {
3297 /* never enough room */
3298 sctp_m_freem(m_notify);
3301 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3302 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3303 if (number_entries == 0) {
3304 strreset->strreset_flags = flag | SCTP_STRRESET_ALL_STREAMS;
3306 strreset->strreset_flags = flag | SCTP_STRRESET_STREAM_LIST;
3308 strreset->strreset_length = len;
3309 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3310 if (number_entries) {
3313 for (i = 0; i < number_entries; i++) {
3314 strreset->strreset_list[i] = ntohs(list[i]);
3317 SCTP_BUF_LEN(m_notify) = len;
3318 SCTP_BUF_NEXT(m_notify) = NULL;
3319 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3321 sctp_m_freem(m_notify);
3324 /* append to socket */
3325 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3328 if (control == NULL) {
3330 sctp_m_freem(m_notify);
3333 control->spec_flags = M_NOTIFICATION;
3334 control->length = SCTP_BUF_LEN(m_notify);
3335 /* not that we need this */
3336 control->tail_mbuf = m_notify;
3337 sctp_add_to_readq(stcb->sctp_ep, stcb,
3339 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3344 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
3345 uint32_t error, void *data, int so_locked
3346 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3351 if ((stcb == NULL) ||
3352 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3353 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3354 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3355 /* If the socket is gone we are out of here */
3358 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
3361 if (stcb && ((stcb->asoc.state & SCTP_STATE_COOKIE_WAIT) ||
3362 (stcb->asoc.state & SCTP_STATE_COOKIE_ECHOED))) {
3363 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
3364 (notification == SCTP_NOTIFY_INTERFACE_UP) ||
3365 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
3366 /* Don't report these in front states */
3370 switch (notification) {
3371 case SCTP_NOTIFY_ASSOC_UP:
3372 if (stcb->asoc.assoc_up_sent == 0) {
3373 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, so_locked);
3374 stcb->asoc.assoc_up_sent = 1;
3376 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
3377 sctp_notify_adaptation_layer(stcb, error);
3379 if (stcb->asoc.peer_supports_auth == 0) {
3380 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3384 case SCTP_NOTIFY_ASSOC_DOWN:
3385 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, so_locked);
3387 case SCTP_NOTIFY_INTERFACE_DOWN:
3389 struct sctp_nets *net;
3391 net = (struct sctp_nets *)data;
3392 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
3393 (struct sockaddr *)&net->ro._l_addr, error);
3396 case SCTP_NOTIFY_INTERFACE_UP:
3398 struct sctp_nets *net;
3400 net = (struct sctp_nets *)data;
3401 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
3402 (struct sockaddr *)&net->ro._l_addr, error);
3405 case SCTP_NOTIFY_INTERFACE_CONFIRMED:
3407 struct sctp_nets *net;
3409 net = (struct sctp_nets *)data;
3410 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
3411 (struct sockaddr *)&net->ro._l_addr, error);
3414 case SCTP_NOTIFY_SPECIAL_SP_FAIL:
3415 sctp_notify_send_failed2(stcb, error,
3416 (struct sctp_stream_queue_pending *)data, so_locked);
3418 case SCTP_NOTIFY_DG_FAIL:
3419 sctp_notify_send_failed(stcb, error,
3420 (struct sctp_tmit_chunk *)data, so_locked);
3422 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
3426 val = *((uint32_t *) data);
3428 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked);
3431 case SCTP_NOTIFY_STRDATA_ERR:
3433 case SCTP_NOTIFY_ASSOC_ABORTED:
3434 if ((stcb) && (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3435 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED))) {
3436 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, NULL, so_locked);
3438 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, NULL, so_locked);
3441 case SCTP_NOTIFY_PEER_OPENED_STREAM:
3443 case SCTP_NOTIFY_STREAM_OPENED_OK:
3445 case SCTP_NOTIFY_ASSOC_RESTART:
3446 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, data, so_locked);
3447 if (stcb->asoc.peer_supports_auth == 0) {
3448 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3452 case SCTP_NOTIFY_HB_RESP:
3454 case SCTP_NOTIFY_STR_RESET_INSTREAM_ADD_OK:
3455 sctp_notify_stream_reset_add(stcb, error, SCTP_STRRESET_INBOUND_STR);
3457 case SCTP_NOTIFY_STR_RESET_ADD_OK:
3458 sctp_notify_stream_reset_add(stcb, error, SCTP_STRRESET_OUTBOUND_STR);
3460 case SCTP_NOTIFY_STR_RESET_ADD_FAIL:
3461 sctp_notify_stream_reset_add(stcb, error, (SCTP_STRRESET_FAILED | SCTP_STRRESET_OUTBOUND_STR));
3464 case SCTP_NOTIFY_STR_RESET_SEND:
3465 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STRRESET_OUTBOUND_STR);
3467 case SCTP_NOTIFY_STR_RESET_RECV:
3468 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STRRESET_INBOUND_STR);
3470 case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
3471 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), (SCTP_STRRESET_OUTBOUND_STR | SCTP_STRRESET_FAILED));
3473 case SCTP_NOTIFY_STR_RESET_FAILED_IN:
3474 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), (SCTP_STRRESET_INBOUND_STR | SCTP_STRRESET_FAILED));
3476 case SCTP_NOTIFY_ASCONF_ADD_IP:
3477 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
3480 case SCTP_NOTIFY_ASCONF_DELETE_IP:
3481 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
3484 case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
3485 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
3488 case SCTP_NOTIFY_ASCONF_SUCCESS:
3490 case SCTP_NOTIFY_ASCONF_FAILED:
3492 case SCTP_NOTIFY_PEER_SHUTDOWN:
3493 sctp_notify_shutdown_event(stcb);
3495 case SCTP_NOTIFY_AUTH_NEW_KEY:
3496 sctp_notify_authentication(stcb, SCTP_AUTH_NEWKEY, error,
3497 (uint16_t) (uintptr_t) data,
3500 case SCTP_NOTIFY_AUTH_FREE_KEY:
3501 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
3502 (uint16_t) (uintptr_t) data,
3505 case SCTP_NOTIFY_NO_PEER_AUTH:
3506 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
3507 (uint16_t) (uintptr_t) data,
3510 case SCTP_NOTIFY_SENDER_DRY:
3511 sctp_notify_sender_dry_event(stcb, so_locked);
3514 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
3515 __FUNCTION__, notification, notification);
3521 sctp_report_all_outbound(struct sctp_tcb *stcb, int holds_lock, int so_locked
3522 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3527 struct sctp_association *asoc;
3528 struct sctp_stream_out *outs;
3529 struct sctp_tmit_chunk *chk, *nchk;
3530 struct sctp_stream_queue_pending *sp, *nsp;
3537 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3538 /* already being freed */
3541 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3542 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3543 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
3546 /* now through all the gunk freeing chunks */
3547 if (holds_lock == 0) {
3548 SCTP_TCB_SEND_LOCK(stcb);
3550 /* sent queue SHOULD be empty */
3551 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
3552 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
3553 asoc->sent_queue_cnt--;
3554 if (chk->data != NULL) {
3555 sctp_free_bufspace(stcb, asoc, chk, 1);
3556 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb,
3557 SCTP_NOTIFY_DATAGRAM_SENT, chk, so_locked);
3559 sctp_m_freem(chk->data);
3563 sctp_free_a_chunk(stcb, chk, so_locked);
3564 /* sa_ignore FREED_MEMORY */
3566 /* pending send queue SHOULD be empty */
3567 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
3568 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
3569 asoc->send_queue_cnt--;
3570 if (chk->data != NULL) {
3571 sctp_free_bufspace(stcb, asoc, chk, 1);
3572 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb,
3573 SCTP_NOTIFY_DATAGRAM_UNSENT, chk, so_locked);
3575 sctp_m_freem(chk->data);
3579 sctp_free_a_chunk(stcb, chk, so_locked);
3580 /* sa_ignore FREED_MEMORY */
3582 for (i = 0; i < asoc->streamoutcnt; i++) {
3583 /* For each stream */
3584 outs = &asoc->strmout[i];
3585 /* clean up any sends there */
3586 asoc->locked_on_sending = NULL;
3587 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
3588 asoc->stream_queue_cnt--;
3589 TAILQ_REMOVE(&outs->outqueue, sp, next);
3590 sctp_free_spbufspace(stcb, asoc, sp);
3592 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
3593 SCTP_NOTIFY_DATAGRAM_UNSENT, (void *)sp, so_locked);
3595 sctp_m_freem(sp->data);
3600 sctp_free_remote_addr(sp->net);
3603 /* Free the chunk */
3604 sctp_free_a_strmoq(stcb, sp, so_locked);
3605 /* sa_ignore FREED_MEMORY */
3609 if (holds_lock == 0) {
3610 SCTP_TCB_SEND_UNLOCK(stcb);
3615 sctp_abort_notification(struct sctp_tcb *stcb, int error, int so_locked
3616 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3624 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
3625 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
3626 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
3627 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
3629 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3630 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3631 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3634 /* Tell them we lost the asoc */
3635 sctp_report_all_outbound(stcb, 1, so_locked);
3636 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_ABORTED, stcb, error, NULL, so_locked);
3640 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3641 struct mbuf *m, int iphlen, struct sctphdr *sh, struct mbuf *op_err,
3642 uint32_t vrf_id, uint16_t port)
3646 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3653 /* We have a TCB to abort, send notification too */
3654 vtag = stcb->asoc.peer_vtag;
3655 sctp_abort_notification(stcb, 0, SCTP_SO_NOT_LOCKED);
3656 /* get the assoc vrf id and table id */
3657 vrf_id = stcb->asoc.vrf_id;
3658 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
3660 sctp_send_abort(m, iphlen, sh, vtag, op_err, vrf_id, port);
3662 /* Ok, now lets free it */
3663 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3664 so = SCTP_INP_SO(inp);
3665 atomic_add_int(&stcb->asoc.refcnt, 1);
3666 SCTP_TCB_UNLOCK(stcb);
3667 SCTP_SOCKET_LOCK(so, 1);
3668 SCTP_TCB_LOCK(stcb);
3669 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3671 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3672 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
3673 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3674 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3676 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
3677 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3678 SCTP_SOCKET_UNLOCK(so, 1);
3683 #ifdef SCTP_ASOCLOG_OF_TSNS
3685 sctp_print_out_track_log(struct sctp_tcb *stcb)
3690 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
3691 SCTP_PRINTF("IN bound TSN log-aaa\n");
3692 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
3693 SCTP_PRINTF("None rcvd\n");
3696 if (stcb->asoc.tsn_in_wrapped) {
3697 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
3698 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3699 stcb->asoc.in_tsnlog[i].tsn,
3700 stcb->asoc.in_tsnlog[i].strm,
3701 stcb->asoc.in_tsnlog[i].seq,
3702 stcb->asoc.in_tsnlog[i].flgs,
3703 stcb->asoc.in_tsnlog[i].sz);
3706 if (stcb->asoc.tsn_in_at) {
3707 for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
3708 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3709 stcb->asoc.in_tsnlog[i].tsn,
3710 stcb->asoc.in_tsnlog[i].strm,
3711 stcb->asoc.in_tsnlog[i].seq,
3712 stcb->asoc.in_tsnlog[i].flgs,
3713 stcb->asoc.in_tsnlog[i].sz);
3717 SCTP_PRINTF("OUT bound TSN log-aaa\n");
3718 if ((stcb->asoc.tsn_out_at == 0) &&
3719 (stcb->asoc.tsn_out_wrapped == 0)) {
3720 SCTP_PRINTF("None sent\n");
3722 if (stcb->asoc.tsn_out_wrapped) {
3723 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
3724 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3725 stcb->asoc.out_tsnlog[i].tsn,
3726 stcb->asoc.out_tsnlog[i].strm,
3727 stcb->asoc.out_tsnlog[i].seq,
3728 stcb->asoc.out_tsnlog[i].flgs,
3729 stcb->asoc.out_tsnlog[i].sz);
3732 if (stcb->asoc.tsn_out_at) {
3733 for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
3734 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3735 stcb->asoc.out_tsnlog[i].tsn,
3736 stcb->asoc.out_tsnlog[i].strm,
3737 stcb->asoc.out_tsnlog[i].seq,
3738 stcb->asoc.out_tsnlog[i].flgs,
3739 stcb->asoc.out_tsnlog[i].sz);
3748 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3749 int error, struct mbuf *op_err,
3751 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3756 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3761 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3762 so = SCTP_INP_SO(inp);
3765 /* Got to have a TCB */
3766 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
3767 if (LIST_FIRST(&inp->sctp_asoc_list) == NULL) {
3768 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
3769 SCTP_CALLED_DIRECTLY_NOCMPSET);
3774 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
3776 /* notify the ulp */
3777 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0)
3778 sctp_abort_notification(stcb, error, so_locked);
3779 /* notify the peer */
3780 #if defined(SCTP_PANIC_ON_ABORT)
3781 panic("aborting an association");
3783 sctp_send_abort_tcb(stcb, op_err, so_locked);
3784 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3785 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
3786 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3787 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3789 /* now free the asoc */
3790 #ifdef SCTP_ASOCLOG_OF_TSNS
3791 sctp_print_out_track_log(stcb);
3793 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3795 atomic_add_int(&stcb->asoc.refcnt, 1);
3796 SCTP_TCB_UNLOCK(stcb);
3797 SCTP_SOCKET_LOCK(so, 1);
3798 SCTP_TCB_LOCK(stcb);
3799 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3802 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
3803 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3805 SCTP_SOCKET_UNLOCK(so, 1);
3811 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset, struct sctphdr *sh,
3812 struct sctp_inpcb *inp, struct mbuf *op_err, uint32_t vrf_id, uint16_t port)
3814 struct sctp_chunkhdr *ch, chunk_buf;
3815 unsigned int chk_length;
3817 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
3818 /* Generate a TO address for future reference */
3819 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
3820 if (LIST_FIRST(&inp->sctp_asoc_list) == NULL) {
3821 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
3822 SCTP_CALLED_DIRECTLY_NOCMPSET);
3825 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
3826 sizeof(*ch), (uint8_t *) & chunk_buf);
3827 while (ch != NULL) {
3828 chk_length = ntohs(ch->chunk_length);
3829 if (chk_length < sizeof(*ch)) {
3830 /* break to abort land */
3833 switch (ch->chunk_type) {
3834 case SCTP_COOKIE_ECHO:
3835 /* We hit here only if the assoc is being freed */
3837 case SCTP_PACKET_DROPPED:
3838 /* we don't respond to pkt-dropped */
3840 case SCTP_ABORT_ASSOCIATION:
3841 /* we don't respond with an ABORT to an ABORT */
3843 case SCTP_SHUTDOWN_COMPLETE:
3845 * we ignore it since we are not waiting for it and
3849 case SCTP_SHUTDOWN_ACK:
3850 sctp_send_shutdown_complete2(m, iphlen, sh, vrf_id, port);
3855 offset += SCTP_SIZE32(chk_length);
3856 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
3857 sizeof(*ch), (uint8_t *) & chunk_buf);
3859 sctp_send_abort(m, iphlen, sh, 0, op_err, vrf_id, port);
3863 * check the inbound datagram to make sure there is not an abort inside it,
3864 * if there is return 1, else return 0.
3867 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t * vtagfill)
3869 struct sctp_chunkhdr *ch;
3870 struct sctp_init_chunk *init_chk, chunk_buf;
3872 unsigned int chk_length;
3874 offset = iphlen + sizeof(struct sctphdr);
3875 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
3876 (uint8_t *) & chunk_buf);
3877 while (ch != NULL) {
3878 chk_length = ntohs(ch->chunk_length);
3879 if (chk_length < sizeof(*ch)) {
3880 /* packet is probably corrupt */
3883 /* we seem to be ok, is it an abort? */
3884 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
3885 /* yep, tell them */
3888 if (ch->chunk_type == SCTP_INITIATION) {
3889 /* need to update the Vtag */
3890 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
3891 offset, sizeof(*init_chk), (uint8_t *) & chunk_buf);
3892 if (init_chk != NULL) {
3893 *vtagfill = ntohl(init_chk->init.initiate_tag);
3896 /* Nope, move to the next chunk */
3897 offset += SCTP_SIZE32(chk_length);
3898 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
3899 sizeof(*ch), (uint8_t *) & chunk_buf);
3905 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
3906 * set (i.e. it's 0) so, create this function to compare link local scopes
3910 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
3912 struct sockaddr_in6 a, b;
3918 if (a.sin6_scope_id == 0)
3919 if (sa6_recoverscope(&a)) {
3920 /* can't get scope, so can't match */
3923 if (b.sin6_scope_id == 0)
3924 if (sa6_recoverscope(&b)) {
3925 /* can't get scope, so can't match */
3928 if (a.sin6_scope_id != b.sin6_scope_id)
3935 * returns a sockaddr_in6 with embedded scope recovered and removed
3937 struct sockaddr_in6 *
3938 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
3940 /* check and strip embedded scope junk */
3941 if (addr->sin6_family == AF_INET6) {
3942 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
3943 if (addr->sin6_scope_id == 0) {
3945 if (!sa6_recoverscope(store)) {
3946 /* use the recovered scope */
3950 /* else, return the original "to" addr */
3951 in6_clearscope(&addr->sin6_addr);
3961 * are the two addresses the same? currently a "scopeless" check returns: 1
3965 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
3969 if (sa1 == NULL || sa2 == NULL)
3972 /* must be the same family */
3973 if (sa1->sa_family != sa2->sa_family)
3976 switch (sa1->sa_family) {
3980 /* IPv6 addresses */
3981 struct sockaddr_in6 *sin6_1, *sin6_2;
3983 sin6_1 = (struct sockaddr_in6 *)sa1;
3984 sin6_2 = (struct sockaddr_in6 *)sa2;
3985 return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
3992 /* IPv4 addresses */
3993 struct sockaddr_in *sin_1, *sin_2;
3995 sin_1 = (struct sockaddr_in *)sa1;
3996 sin_2 = (struct sockaddr_in *)sa2;
3997 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
4001 /* we don't do these... */
4007 sctp_print_address(struct sockaddr *sa)
4010 char ip6buf[INET6_ADDRSTRLEN];
4015 switch (sa->sa_family) {
4019 struct sockaddr_in6 *sin6;
4021 sin6 = (struct sockaddr_in6 *)sa;
4022 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
4023 ip6_sprintf(ip6buf, &sin6->sin6_addr),
4024 ntohs(sin6->sin6_port),
4025 sin6->sin6_scope_id);
4032 struct sockaddr_in *sin;
4035 sin = (struct sockaddr_in *)sa;
4036 p = (unsigned char *)&sin->sin_addr;
4037 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
4038 p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
4049 sctp_print_address_pkt(struct ip *iph, struct sctphdr *sh)
4051 switch (iph->ip_v) {
4055 struct sockaddr_in lsa, fsa;
4057 bzero(&lsa, sizeof(lsa));
4058 lsa.sin_len = sizeof(lsa);
4059 lsa.sin_family = AF_INET;
4060 lsa.sin_addr = iph->ip_src;
4061 lsa.sin_port = sh->src_port;
4062 bzero(&fsa, sizeof(fsa));
4063 fsa.sin_len = sizeof(fsa);
4064 fsa.sin_family = AF_INET;
4065 fsa.sin_addr = iph->ip_dst;
4066 fsa.sin_port = sh->dest_port;
4067 SCTP_PRINTF("src: ");
4068 sctp_print_address((struct sockaddr *)&lsa);
4069 SCTP_PRINTF("dest: ");
4070 sctp_print_address((struct sockaddr *)&fsa);
4075 case IPV6_VERSION >> 4:
4077 struct ip6_hdr *ip6;
4078 struct sockaddr_in6 lsa6, fsa6;
4080 ip6 = (struct ip6_hdr *)iph;
4081 bzero(&lsa6, sizeof(lsa6));
4082 lsa6.sin6_len = sizeof(lsa6);
4083 lsa6.sin6_family = AF_INET6;
4084 lsa6.sin6_addr = ip6->ip6_src;
4085 lsa6.sin6_port = sh->src_port;
4086 bzero(&fsa6, sizeof(fsa6));
4087 fsa6.sin6_len = sizeof(fsa6);
4088 fsa6.sin6_family = AF_INET6;
4089 fsa6.sin6_addr = ip6->ip6_dst;
4090 fsa6.sin6_port = sh->dest_port;
4091 SCTP_PRINTF("src: ");
4092 sctp_print_address((struct sockaddr *)&lsa6);
4093 SCTP_PRINTF("dest: ");
4094 sctp_print_address((struct sockaddr *)&fsa6);
4105 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
4106 struct sctp_inpcb *new_inp,
4107 struct sctp_tcb *stcb,
4111 * go through our old INP and pull off any control structures that
4112 * belong to stcb and move then to the new inp.
4114 struct socket *old_so, *new_so;
4115 struct sctp_queued_to_read *control, *nctl;
4116 struct sctp_readhead tmp_queue;
4120 old_so = old_inp->sctp_socket;
4121 new_so = new_inp->sctp_socket;
4122 TAILQ_INIT(&tmp_queue);
4123 error = sblock(&old_so->so_rcv, waitflags);
4126 * Gak, can't get sblock, we have a problem. data will be
4127 * left stranded.. and we don't dare look at it since the
4128 * other thread may be reading something. Oh well, its a
4129 * screwed up app that does a peeloff OR a accept while
4130 * reading from the main socket... actually its only the
4131 * peeloff() case, since I think read will fail on a
4132 * listening socket..
4136 /* lock the socket buffers */
4137 SCTP_INP_READ_LOCK(old_inp);
4138 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
4139 /* Pull off all for out target stcb */
4140 if (control->stcb == stcb) {
4141 /* remove it we want it */
4142 TAILQ_REMOVE(&old_inp->read_queue, control, next);
4143 TAILQ_INSERT_TAIL(&tmp_queue, control, next);
4146 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4147 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
4149 sctp_sbfree(control, stcb, &old_so->so_rcv, m);
4150 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4151 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4153 m = SCTP_BUF_NEXT(m);
4157 SCTP_INP_READ_UNLOCK(old_inp);
4158 /* Remove the sb-lock on the old socket */
4160 sbunlock(&old_so->so_rcv);
4161 /* Now we move them over to the new socket buffer */
4162 SCTP_INP_READ_LOCK(new_inp);
4163 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
4164 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
4167 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4168 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4170 sctp_sballoc(stcb, &new_so->so_rcv, m);
4171 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4172 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4174 m = SCTP_BUF_NEXT(m);
4177 SCTP_INP_READ_UNLOCK(new_inp);
4181 sctp_add_to_readq(struct sctp_inpcb *inp,
4182 struct sctp_tcb *stcb,
4183 struct sctp_queued_to_read *control,
4186 int inp_read_lock_held,
4188 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4194 * Here we must place the control on the end of the socket read
4195 * queue AND increment sb_cc so that select will work properly on
4198 struct mbuf *m, *prev = NULL;
4203 panic("Gak, inp NULL on add_to_readq");
4207 if (inp_read_lock_held == 0)
4208 SCTP_INP_READ_LOCK(inp);
4209 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
4210 sctp_free_remote_addr(control->whoFrom);
4211 if (control->data) {
4212 sctp_m_freem(control->data);
4213 control->data = NULL;
4215 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control);
4216 if (inp_read_lock_held == 0)
4217 SCTP_INP_READ_UNLOCK(inp);
4220 if (!(control->spec_flags & M_NOTIFICATION)) {
4221 atomic_add_int(&inp->total_recvs, 1);
4222 if (!control->do_not_ref_stcb) {
4223 atomic_add_int(&stcb->total_recvs, 1);
4227 control->held_length = 0;
4228 control->length = 0;
4230 if (SCTP_BUF_LEN(m) == 0) {
4231 /* Skip mbufs with NO length */
4234 control->data = sctp_m_free(m);
4237 SCTP_BUF_NEXT(prev) = sctp_m_free(m);
4238 m = SCTP_BUF_NEXT(prev);
4241 control->tail_mbuf = prev;
4246 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4247 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4249 sctp_sballoc(stcb, sb, m);
4250 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4251 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4253 atomic_add_int(&control->length, SCTP_BUF_LEN(m));
4254 m = SCTP_BUF_NEXT(m);
4257 control->tail_mbuf = prev;
4259 /* Everything got collapsed out?? */
4260 sctp_free_remote_addr(control->whoFrom);
4261 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control);
4262 if (inp_read_lock_held == 0)
4263 SCTP_INP_READ_UNLOCK(inp);
4267 control->end_added = 1;
4269 TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
4270 if (inp_read_lock_held == 0)
4271 SCTP_INP_READ_UNLOCK(inp);
4272 if (inp && inp->sctp_socket) {
4273 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4274 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4276 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4279 so = SCTP_INP_SO(inp);
4281 atomic_add_int(&stcb->asoc.refcnt, 1);
4282 SCTP_TCB_UNLOCK(stcb);
4283 SCTP_SOCKET_LOCK(so, 1);
4284 SCTP_TCB_LOCK(stcb);
4285 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4286 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4287 SCTP_SOCKET_UNLOCK(so, 1);
4292 sctp_sorwakeup(inp, inp->sctp_socket);
4293 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4295 SCTP_SOCKET_UNLOCK(so, 1);
4304 sctp_append_to_readq(struct sctp_inpcb *inp,
4305 struct sctp_tcb *stcb,
4306 struct sctp_queued_to_read *control,
4313 * A partial delivery API event is underway. OR we are appending on
4314 * the reassembly queue.
4316 * If PDAPI this means we need to add m to the end of the data.
4317 * Increase the length in the control AND increment the sb_cc.
4318 * Otherwise sb is NULL and all we need to do is put it at the end
4319 * of the mbuf chain.
4322 struct mbuf *mm, *tail = NULL, *prev = NULL;
4325 SCTP_INP_READ_LOCK(inp);
4327 if (control == NULL) {
4330 SCTP_INP_READ_UNLOCK(inp);
4334 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ)) {
4335 SCTP_INP_READ_UNLOCK(inp);
4338 if (control->end_added) {
4339 /* huh this one is complete? */
4347 if (SCTP_BUF_LEN(mm) == 0) {
4348 /* Skip mbufs with NO lenght */
4351 m = sctp_m_free(mm);
4354 SCTP_BUF_NEXT(prev) = sctp_m_free(mm);
4355 mm = SCTP_BUF_NEXT(prev);
4360 len += SCTP_BUF_LEN(mm);
4362 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4363 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(mm));
4365 sctp_sballoc(stcb, sb, mm);
4366 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4367 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4370 mm = SCTP_BUF_NEXT(mm);
4375 /* Really there should always be a prev */
4377 /* Huh nothing left? */
4379 panic("Nothing left to add?");
4386 if (control->tail_mbuf) {
4388 SCTP_BUF_NEXT(control->tail_mbuf) = m;
4389 control->tail_mbuf = tail;
4393 if (control->data != NULL) {
4394 panic("This should NOT happen");
4398 control->tail_mbuf = tail;
4400 atomic_add_int(&control->length, len);
4402 /* message is complete */
4403 if (stcb && (control == stcb->asoc.control_pdapi)) {
4404 stcb->asoc.control_pdapi = NULL;
4406 control->held_length = 0;
4407 control->end_added = 1;
4410 control->do_not_ref_stcb = 1;
4413 * When we are appending in partial delivery, the cum-ack is used
4414 * for the actual pd-api highest tsn on this mbuf. The true cum-ack
4415 * is populated in the outbound sinfo structure from the true cumack
4416 * if the association exists...
4418 control->sinfo_tsn = control->sinfo_cumtsn = ctls_cumack;
4420 SCTP_INP_READ_UNLOCK(inp);
4422 if (inp && inp->sctp_socket) {
4423 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4424 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4426 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4429 so = SCTP_INP_SO(inp);
4430 atomic_add_int(&stcb->asoc.refcnt, 1);
4431 SCTP_TCB_UNLOCK(stcb);
4432 SCTP_SOCKET_LOCK(so, 1);
4433 SCTP_TCB_LOCK(stcb);
4434 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4435 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4436 SCTP_SOCKET_UNLOCK(so, 1);
4440 sctp_sorwakeup(inp, inp->sctp_socket);
4441 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4442 SCTP_SOCKET_UNLOCK(so, 1);
4451 /*************HOLD THIS COMMENT FOR PATCH FILE OF
4452 *************ALTERNATE ROUTING CODE
4455 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
4456 *************ALTERNATE ROUTING CODE
4460 sctp_generate_invmanparam(int err)
4462 /* Return a MBUF with a invalid mandatory parameter */
4465 m = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr), 0, M_DONTWAIT, 1, MT_DATA);
4467 struct sctp_paramhdr *ph;
4469 SCTP_BUF_LEN(m) = sizeof(struct sctp_paramhdr);
4470 ph = mtod(m, struct sctp_paramhdr *);
4471 ph->param_length = htons(sizeof(struct sctp_paramhdr));
4472 ph->param_type = htons(err);
4477 #ifdef SCTP_MBCNT_LOGGING
4479 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
4480 struct sctp_tmit_chunk *tp1, int chk_cnt)
4482 if (tp1->data == NULL) {
4485 asoc->chunks_on_out_queue -= chk_cnt;
4486 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
4487 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
4488 asoc->total_output_queue_size,
4493 if (asoc->total_output_queue_size >= tp1->book_size) {
4494 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
4496 asoc->total_output_queue_size = 0;
4499 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
4500 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
4501 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
4502 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
4504 stcb->sctp_socket->so_snd.sb_cc = 0;
4513 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
4514 int reason, int so_locked
4515 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4520 struct sctp_stream_out *strq;
4521 struct sctp_tmit_chunk *chk = NULL, *tp2;
4522 struct sctp_stream_queue_pending *sp;
4523 uint16_t stream = 0, seq = 0;
4524 uint8_t foundeom = 0;
4527 int do_wakeup_routine = 0;
4529 stream = tp1->rec.data.stream_number;
4530 seq = tp1->rec.data.stream_seq;
4532 ret_sz += tp1->book_size;
4533 if (tp1->data != NULL) {
4534 if (tp1->sent < SCTP_DATAGRAM_RESEND) {
4535 sctp_flight_size_decrease(tp1);
4536 sctp_total_flight_decrease(stcb, tp1);
4538 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4539 stcb->asoc.peers_rwnd += tp1->send_size;
4540 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
4541 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb, reason, tp1, so_locked);
4543 sctp_m_freem(tp1->data);
4546 do_wakeup_routine = 1;
4547 if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
4548 stcb->asoc.sent_queue_cnt_removeable--;
4551 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4552 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
4553 SCTP_DATA_NOT_FRAG) {
4554 /* not frag'ed we ae done */
4557 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4558 /* end of frag, we are done */
4563 * Its a begin or middle piece, we must mark all of
4567 tp1 = TAILQ_NEXT(tp1, sctp_next);
4569 } while (tp1 && notdone);
4570 if (foundeom == 0) {
4572 * The multi-part message was scattered across the send and
4575 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
4576 if ((tp1->rec.data.stream_number != stream) ||
4577 (tp1->rec.data.stream_seq != seq)) {
4581 * save to chk in case we have some on stream out
4582 * queue. If so and we have an un-transmitted one we
4583 * don't have to fudge the TSN.
4586 ret_sz += tp1->book_size;
4587 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4588 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb, reason, tp1, so_locked);
4590 sctp_m_freem(tp1->data);
4593 /* No flight involved here book the size to 0 */
4595 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4598 do_wakeup_routine = 1;
4599 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4600 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
4602 * on to the sent queue so we can wait for it to be
4605 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
4607 stcb->asoc.send_queue_cnt--;
4608 stcb->asoc.sent_queue_cnt++;
4611 if (foundeom == 0) {
4613 * Still no eom found. That means there is stuff left on the
4614 * stream out queue.. yuck.
4616 strq = &stcb->asoc.strmout[stream];
4617 SCTP_TCB_SEND_LOCK(stcb);
4618 TAILQ_FOREACH(sp, &strq->outqueue, next) {
4619 /* FIXME: Shouldn't this be a serial number check? */
4620 if (sp->strseq > seq) {
4623 /* Check if its our SEQ */
4624 if (sp->strseq == seq) {
4625 sp->discard_rest = 1;
4627 * We may need to put a chunk on the queue
4628 * that holds the TSN that would have been
4629 * sent with the LAST bit.
4632 /* Yep, we have to */
4633 sctp_alloc_a_chunk(stcb, chk);
4636 * we are hosed. All we can
4637 * do is nothing.. which
4638 * will cause an abort if
4639 * the peer is paying
4644 memset(chk, 0, sizeof(*chk));
4645 chk->rec.data.rcv_flags = SCTP_DATA_LAST_FRAG;
4646 chk->sent = SCTP_FORWARD_TSN_SKIP;
4647 chk->asoc = &stcb->asoc;
4648 chk->rec.data.stream_seq = sp->strseq;
4649 chk->rec.data.stream_number = sp->stream;
4650 chk->rec.data.payloadtype = sp->ppid;
4651 chk->rec.data.context = sp->context;
4652 chk->flags = sp->act_flags;
4654 chk->whoTo = sp->net;
4656 chk->whoTo = stcb->asoc.primary_destination;
4657 atomic_add_int(&chk->whoTo->ref_count, 1);
4658 chk->rec.data.TSN_seq = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
4659 stcb->asoc.pr_sctp_cnt++;
4660 chk->pr_sctp_on = 1;
4661 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
4662 stcb->asoc.sent_queue_cnt++;
4663 stcb->asoc.pr_sctp_cnt++;
4665 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
4670 * Pull any data to free up the SB
4671 * and allow sender to "add more"
4672 * whilc we will throw away :-)
4674 sctp_free_spbufspace(stcb, &stcb->asoc,
4676 ret_sz += sp->length;
4677 do_wakeup_routine = 1;
4679 sctp_m_freem(sp->data);
4682 sp->tail_mbuf = NULL;
4686 } /* End tailq_foreach */
4687 SCTP_TCB_SEND_UNLOCK(stcb);
4689 if (do_wakeup_routine) {
4690 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4693 so = SCTP_INP_SO(stcb->sctp_ep);
4695 atomic_add_int(&stcb->asoc.refcnt, 1);
4696 SCTP_TCB_UNLOCK(stcb);
4697 SCTP_SOCKET_LOCK(so, 1);
4698 SCTP_TCB_LOCK(stcb);
4699 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4700 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
4701 /* assoc was freed while we were unlocked */
4702 SCTP_SOCKET_UNLOCK(so, 1);
4707 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
4708 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4710 SCTP_SOCKET_UNLOCK(so, 1);
4718 * checks to see if the given address, sa, is one that is currently known by
4719 * the kernel note: can't distinguish the same address on multiple interfaces
4720 * and doesn't handle multiple addresses with different zone/scope id's note:
4721 * ifa_ifwithaddr() compares the entire sockaddr struct
4724 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
4727 struct sctp_laddr *laddr;
4729 if (holds_lock == 0) {
4730 SCTP_INP_RLOCK(inp);
4732 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4733 if (laddr->ifa == NULL)
4735 if (addr->sa_family != laddr->ifa->address.sa.sa_family)
4738 if (addr->sa_family == AF_INET) {
4739 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
4740 laddr->ifa->address.sin.sin_addr.s_addr) {
4742 if (holds_lock == 0) {
4743 SCTP_INP_RUNLOCK(inp);
4745 return (laddr->ifa);
4751 if (addr->sa_family == AF_INET6) {
4752 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
4753 &laddr->ifa->address.sin6)) {
4755 if (holds_lock == 0) {
4756 SCTP_INP_RUNLOCK(inp);
4758 return (laddr->ifa);
4764 if (holds_lock == 0) {
4765 SCTP_INP_RUNLOCK(inp);
4771 sctp_get_ifa_hash_val(struct sockaddr *addr)
4773 switch (addr->sa_family) {
4777 struct sockaddr_in *sin;
4779 sin = (struct sockaddr_in *)addr;
4780 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
4786 struct sockaddr_in6 *sin6;
4787 uint32_t hash_of_addr;
4789 sin6 = (struct sockaddr_in6 *)addr;
4790 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
4791 sin6->sin6_addr.s6_addr32[1] +
4792 sin6->sin6_addr.s6_addr32[2] +
4793 sin6->sin6_addr.s6_addr32[3]);
4794 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
4795 return (hash_of_addr);
4805 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
4807 struct sctp_ifa *sctp_ifap;
4808 struct sctp_vrf *vrf;
4809 struct sctp_ifalist *hash_head;
4810 uint32_t hash_of_addr;
4812 if (holds_lock == 0)
4813 SCTP_IPI_ADDR_RLOCK();
4815 vrf = sctp_find_vrf(vrf_id);
4818 if (holds_lock == 0)
4819 SCTP_IPI_ADDR_RUNLOCK();
4822 hash_of_addr = sctp_get_ifa_hash_val(addr);
4824 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
4825 if (hash_head == NULL) {
4826 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
4827 hash_of_addr, (uint32_t) vrf->vrf_addr_hashmark,
4828 (uint32_t) (hash_of_addr & vrf->vrf_addr_hashmark));
4829 sctp_print_address(addr);
4830 SCTP_PRINTF("No such bucket for address\n");
4831 if (holds_lock == 0)
4832 SCTP_IPI_ADDR_RUNLOCK();
4836 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
4837 if (sctp_ifap == NULL) {
4839 panic("Huh LIST_FOREACH corrupt");
4842 SCTP_PRINTF("LIST corrupt of sctp_ifap's?\n");
4846 if (addr->sa_family != sctp_ifap->address.sa.sa_family)
4849 if (addr->sa_family == AF_INET) {
4850 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
4851 sctp_ifap->address.sin.sin_addr.s_addr) {
4853 if (holds_lock == 0)
4854 SCTP_IPI_ADDR_RUNLOCK();
4861 if (addr->sa_family == AF_INET6) {
4862 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
4863 &sctp_ifap->address.sin6)) {
4865 if (holds_lock == 0)
4866 SCTP_IPI_ADDR_RUNLOCK();
4873 if (holds_lock == 0)
4874 SCTP_IPI_ADDR_RUNLOCK();
4879 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t * freed_so_far, int hold_rlock,
4882 /* User pulled some data, do we need a rwnd update? */
4885 struct socket *so = NULL;
4890 atomic_add_int(&stcb->asoc.refcnt, 1);
4892 if (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED |
4893 SCTP_STATE_SHUTDOWN_RECEIVED |
4894 SCTP_STATE_SHUTDOWN_ACK_SENT)) {
4895 /* Pre-check If we are freeing no update */
4898 SCTP_INP_INCR_REF(stcb->sctp_ep);
4899 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
4900 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4903 so = stcb->sctp_socket;
4907 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
4908 /* Have you have freed enough to look */
4910 /* Yep, its worth a look and the lock overhead */
4912 /* Figure out what the rwnd would be */
4913 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
4914 if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
4915 dif = rwnd - stcb->asoc.my_last_reported_rwnd;
4919 if (dif >= rwnd_req) {
4921 SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
4924 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
4926 * One last check before we allow the guy possibly
4927 * to get in. There is a race, where the guy has not
4928 * reached the gate. In that case
4932 SCTP_TCB_LOCK(stcb);
4933 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
4934 /* No reports here */
4935 SCTP_TCB_UNLOCK(stcb);
4938 SCTP_STAT_INCR(sctps_wu_sacks_sent);
4939 sctp_send_sack(stcb, SCTP_SO_LOCKED);
4941 sctp_chunk_output(stcb->sctp_ep, stcb,
4942 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
4943 /* make sure no timer is running */
4944 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
4945 SCTP_TCB_UNLOCK(stcb);
4947 /* Update how much we have pending */
4948 stcb->freed_by_sorcv_sincelast = dif;
4951 if (so && r_unlocked && hold_rlock) {
4952 SCTP_INP_READ_LOCK(stcb->sctp_ep);
4954 SCTP_INP_DECR_REF(stcb->sctp_ep);
4956 atomic_add_int(&stcb->asoc.refcnt, -1);
4961 sctp_sorecvmsg(struct socket *so,
4964 struct sockaddr *from,
4967 struct sctp_sndrcvinfo *sinfo,
4971 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
4972 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
4973 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
4974 * On the way out we may send out any combination of:
4975 * MSG_NOTIFICATION MSG_EOR
4978 struct sctp_inpcb *inp = NULL;
4980 int cp_len = 0, error = 0;
4981 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
4982 struct mbuf *m = NULL;
4983 struct sctp_tcb *stcb = NULL;
4984 int wakeup_read_socket = 0;
4985 int freecnt_applied = 0;
4986 int out_flags = 0, in_flags = 0;
4987 int block_allowed = 1;
4988 uint32_t freed_so_far = 0;
4989 uint32_t copied_so_far = 0;
4990 int in_eeor_mode = 0;
4991 int no_rcv_needed = 0;
4992 uint32_t rwnd_req = 0;
4993 int hold_sblock = 0;
4996 uint32_t held_length = 0;
4997 int sockbuf_lock = 0;
5000 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5004 in_flags = *msg_flags;
5005 if (in_flags & MSG_PEEK)
5006 SCTP_STAT_INCR(sctps_read_peeks);
5010 slen = uio->uio_resid;
5012 /* Pull in and set up our int flags */
5013 if (in_flags & MSG_OOB) {
5014 /* Out of band's NOT supported */
5015 return (EOPNOTSUPP);
5017 if ((in_flags & MSG_PEEK) && (mp != NULL)) {
5018 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5021 if ((in_flags & (MSG_DONTWAIT
5024 SCTP_SO_IS_NBIO(so)) {
5027 /* setup the endpoint */
5028 inp = (struct sctp_inpcb *)so->so_pcb;
5030 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
5033 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
5034 /* Must be at least a MTU's worth */
5035 if (rwnd_req < SCTP_MIN_RWND)
5036 rwnd_req = SCTP_MIN_RWND;
5037 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
5038 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5039 sctp_misc_ints(SCTP_SORECV_ENTER,
5040 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, uio->uio_resid);
5042 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5043 sctp_misc_ints(SCTP_SORECV_ENTERPL,
5044 rwnd_req, block_allowed, so->so_rcv.sb_cc, uio->uio_resid);
5046 error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0));
5049 goto release_unlocked;
5055 if (hold_sblock == 0) {
5056 SOCKBUF_LOCK(&so->so_rcv);
5059 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5060 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5063 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
5065 error = so->so_error;
5066 if ((in_flags & MSG_PEEK) == 0)
5070 if (so->so_rcv.sb_cc == 0) {
5071 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5078 if ((so->so_rcv.sb_cc <= held_length) && block_allowed) {
5079 /* we need to wait for data */
5080 if ((so->so_rcv.sb_cc == 0) &&
5081 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5082 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
5083 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5085 * For active open side clear flags for
5086 * re-use passive open is blocked by
5089 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5091 * You were aborted, passive side
5094 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5097 so->so_state &= ~(SS_ISCONNECTING |
5098 SS_ISDISCONNECTING |
5102 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5103 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5110 error = sbwait(&so->so_rcv);
5115 goto restart_nosblocks;
5116 } else if (so->so_rcv.sb_cc == 0) {
5118 error = so->so_error;
5119 if ((in_flags & MSG_PEEK) == 0)
5122 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5123 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
5124 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5126 * For active open side clear flags
5127 * for re-use passive open is
5128 * blocked by connect.
5130 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5132 * You were aborted, passive
5133 * side always hits here
5135 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5138 so->so_state &= ~(SS_ISCONNECTING |
5139 SS_ISDISCONNECTING |
5143 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5144 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5151 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
5152 error = EWOULDBLOCK;
5156 if (hold_sblock == 1) {
5157 SOCKBUF_UNLOCK(&so->so_rcv);
5160 /* we possibly have data we can read */
5161 /* sa_ignore FREED_MEMORY */
5162 control = TAILQ_FIRST(&inp->read_queue);
5163 if (control == NULL) {
5165 * This could be happening since the appender did the
5166 * increment but as not yet did the tailq insert onto the
5169 if (hold_rlock == 0) {
5170 SCTP_INP_READ_LOCK(inp);
5173 control = TAILQ_FIRST(&inp->read_queue);
5174 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
5176 panic("Huh, its non zero and nothing on control?");
5178 so->so_rcv.sb_cc = 0;
5180 SCTP_INP_READ_UNLOCK(inp);
5184 if ((control->length == 0) &&
5185 (control->do_not_ref_stcb)) {
5187 * Clean up code for freeing assoc that left behind a
5188 * pdapi.. maybe a peer in EEOR that just closed after
5189 * sending and never indicated a EOR.
5191 if (hold_rlock == 0) {
5193 SCTP_INP_READ_LOCK(inp);
5195 control->held_length = 0;
5196 if (control->data) {
5197 /* Hmm there is data here .. fix */
5201 m_tmp = control->data;
5203 cnt += SCTP_BUF_LEN(m_tmp);
5204 if (SCTP_BUF_NEXT(m_tmp) == NULL) {
5205 control->tail_mbuf = m_tmp;
5206 control->end_added = 1;
5208 m_tmp = SCTP_BUF_NEXT(m_tmp);
5210 control->length = cnt;
5213 TAILQ_REMOVE(&inp->read_queue, control, next);
5214 /* Add back any hiddend data */
5215 sctp_free_remote_addr(control->whoFrom);
5216 sctp_free_a_readq(stcb, control);
5220 SCTP_INP_READ_UNLOCK(inp);
5224 if ((control->length == 0) &&
5225 (control->end_added == 1)) {
5227 * Do we also need to check for (control->pdapi_aborted ==
5230 if (hold_rlock == 0) {
5232 SCTP_INP_READ_LOCK(inp);
5234 TAILQ_REMOVE(&inp->read_queue, control, next);
5235 if (control->data) {
5237 panic("control->data not null but control->length == 0");
5239 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
5240 sctp_m_freem(control->data);
5241 control->data = NULL;
5244 if (control->aux_data) {
5245 sctp_m_free(control->aux_data);
5246 control->aux_data = NULL;
5248 sctp_free_remote_addr(control->whoFrom);
5249 sctp_free_a_readq(stcb, control);
5252 SCTP_INP_READ_UNLOCK(inp);
5256 if (control->length == 0) {
5257 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
5259 /* find a more suitable one then this */
5260 ctl = TAILQ_NEXT(control, next);
5262 if ((ctl->stcb != control->stcb) && (ctl->length) &&
5264 (ctl->spec_flags & M_NOTIFICATION) ||
5265 ((ctl->do_not_ref_stcb == 0) &&
5266 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
5269 * If we have a different TCB next, and there is data
5270 * present. If we have already taken some (pdapi), OR we can
5271 * ref the tcb and no delivery as started on this stream, we
5272 * take it. Note we allow a notification on a different
5273 * assoc to be delivered..
5277 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
5279 ((ctl->some_taken) ||
5280 ((ctl->do_not_ref_stcb == 0) &&
5281 ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
5282 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
5284 * If we have the same tcb, and there is data present, and we
5285 * have the strm interleave feature present. Then if we have
5286 * taken some (pdapi) or we can refer to tht tcb AND we have
5287 * not started a delivery for this stream, we can take it.
5288 * Note we do NOT allow a notificaiton on the same assoc to
5294 ctl = TAILQ_NEXT(ctl, next);
5298 * if we reach here, not suitable replacement is available
5299 * <or> fragment interleave is NOT on. So stuff the sb_cc
5300 * into the our held count, and its time to sleep again.
5302 held_length = so->so_rcv.sb_cc;
5303 control->held_length = so->so_rcv.sb_cc;
5306 /* Clear the held length since there is something to read */
5307 control->held_length = 0;
5309 SCTP_INP_READ_UNLOCK(inp);
5314 * If we reach here, control has a some data for us to read off.
5315 * Note that stcb COULD be NULL.
5317 control->some_taken++;
5319 SOCKBUF_UNLOCK(&so->so_rcv);
5322 stcb = control->stcb;
5324 if ((control->do_not_ref_stcb == 0) &&
5325 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
5326 if (freecnt_applied == 0)
5328 } else if (control->do_not_ref_stcb == 0) {
5329 /* you can't free it on me please */
5331 * The lock on the socket buffer protects us so the
5332 * free code will stop. But since we used the
5333 * socketbuf lock and the sender uses the tcb_lock
5334 * to increment, we need to use the atomic add to
5337 if (freecnt_applied) {
5339 panic("refcnt already incremented");
5341 printf("refcnt already incremented?\n");
5344 atomic_add_int(&stcb->asoc.refcnt, 1);
5345 freecnt_applied = 1;
5348 * Setup to remember how much we have not yet told
5349 * the peer our rwnd has opened up. Note we grab the
5350 * value from the tcb from last time. Note too that
5351 * sack sending clears this when a sack is sent,
5352 * which is fine. Once we hit the rwnd_req, we then
5353 * will go to the sctp_user_rcvd() that will not
5354 * lock until it KNOWs it MUST send a WUP-SACK.
5356 freed_so_far = stcb->freed_by_sorcv_sincelast;
5357 stcb->freed_by_sorcv_sincelast = 0;
5361 ((control->spec_flags & M_NOTIFICATION) == 0) &&
5362 control->do_not_ref_stcb == 0) {
5363 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
5365 /* First lets get off the sinfo and sockaddr info */
5366 if ((sinfo) && filling_sinfo) {
5367 memcpy(sinfo, control, sizeof(struct sctp_nonpad_sndrcvinfo));
5368 nxt = TAILQ_NEXT(control, next);
5369 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5370 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
5371 struct sctp_extrcvinfo *s_extra;
5373 s_extra = (struct sctp_extrcvinfo *)sinfo;
5376 s_extra->sreinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
5377 if (nxt->sinfo_flags & SCTP_UNORDERED) {
5378 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
5380 if (nxt->spec_flags & M_NOTIFICATION) {
5381 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
5383 s_extra->sreinfo_next_aid = nxt->sinfo_assoc_id;
5384 s_extra->sreinfo_next_length = nxt->length;
5385 s_extra->sreinfo_next_ppid = nxt->sinfo_ppid;
5386 s_extra->sreinfo_next_stream = nxt->sinfo_stream;
5387 if (nxt->tail_mbuf != NULL) {
5388 if (nxt->end_added) {
5389 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
5394 * we explicitly 0 this, since the memcpy
5395 * got some other things beyond the older
5396 * sinfo_ that is on the control's structure
5400 s_extra->sreinfo_next_flags = SCTP_NO_NEXT_MSG;
5401 s_extra->sreinfo_next_aid = 0;
5402 s_extra->sreinfo_next_length = 0;
5403 s_extra->sreinfo_next_ppid = 0;
5404 s_extra->sreinfo_next_stream = 0;
5408 * update off the real current cum-ack, if we have an stcb.
5410 if ((control->do_not_ref_stcb == 0) && stcb)
5411 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
5413 * mask off the high bits, we keep the actual chunk bits in
5416 sinfo->sinfo_flags &= 0x00ff;
5417 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
5418 sinfo->sinfo_flags |= SCTP_UNORDERED;
5421 #ifdef SCTP_ASOCLOG_OF_TSNS
5423 int index, newindex;
5424 struct sctp_pcbtsn_rlog *entry;
5427 index = inp->readlog_index;
5428 newindex = index + 1;
5429 if (newindex >= SCTP_READ_LOG_SIZE) {
5432 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
5433 entry = &inp->readlog[index];
5434 entry->vtag = control->sinfo_assoc_id;
5435 entry->strm = control->sinfo_stream;
5436 entry->seq = control->sinfo_ssn;
5437 entry->sz = control->length;
5438 entry->flgs = control->sinfo_flags;
5441 if (fromlen && from) {
5442 struct sockaddr *to;
5445 cp_len = min((size_t)fromlen, (size_t)control->whoFrom->ro._l_addr.sin.sin_len);
5446 memcpy(from, &control->whoFrom->ro._l_addr, cp_len);
5447 ((struct sockaddr_in *)from)->sin_port = control->port_from;
5449 /* No AF_INET use AF_INET6 */
5450 cp_len = min((size_t)fromlen, (size_t)control->whoFrom->ro._l_addr.sin6.sin6_len);
5451 memcpy(from, &control->whoFrom->ro._l_addr, cp_len);
5452 ((struct sockaddr_in6 *)from)->sin6_port = control->port_from;
5456 #if defined(INET) && defined(INET6)
5457 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) &&
5458 (to->sa_family == AF_INET) &&
5459 ((size_t)fromlen >= sizeof(struct sockaddr_in6))) {
5460 struct sockaddr_in *sin;
5461 struct sockaddr_in6 sin6;
5463 sin = (struct sockaddr_in *)to;
5464 bzero(&sin6, sizeof(sin6));
5465 sin6.sin6_family = AF_INET6;
5466 sin6.sin6_len = sizeof(struct sockaddr_in6);
5467 sin6.sin6_addr.s6_addr32[2] = htonl(0xffff);
5468 bcopy(&sin->sin_addr,
5469 &sin6.sin6_addr.s6_addr32[3],
5470 sizeof(sin6.sin6_addr.s6_addr32[3]));
5471 sin6.sin6_port = sin->sin_port;
5472 memcpy(from, (caddr_t)&sin6, sizeof(sin6));
5477 struct sockaddr_in6 lsa6, *to6;
5479 to6 = (struct sockaddr_in6 *)to;
5480 sctp_recover_scope_mac(to6, (&lsa6));
5484 /* now copy out what data we can */
5486 /* copy out each mbuf in the chain up to length */
5490 /* Move out all we can */
5491 cp_len = (int)uio->uio_resid;
5492 my_len = (int)SCTP_BUF_LEN(m);
5493 if (cp_len > my_len) {
5494 /* not enough in this buf */
5498 SCTP_INP_READ_UNLOCK(inp);
5502 error = uiomove(mtod(m, char *), cp_len, uio);
5504 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5507 if ((control->do_not_ref_stcb == 0) && stcb &&
5508 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5512 /* error we are out of here */
5515 if ((SCTP_BUF_NEXT(m) == NULL) &&
5516 (cp_len >= SCTP_BUF_LEN(m)) &&
5517 ((control->end_added == 0) ||
5518 (control->end_added &&
5519 (TAILQ_NEXT(control, next) == NULL)))
5521 SCTP_INP_READ_LOCK(inp);
5524 if (cp_len == SCTP_BUF_LEN(m)) {
5525 if ((SCTP_BUF_NEXT(m) == NULL) &&
5526 (control->end_added)) {
5527 out_flags |= MSG_EOR;
5528 if ((control->do_not_ref_stcb == 0) &&
5529 (control->stcb != NULL) &&
5530 ((control->spec_flags & M_NOTIFICATION) == 0))
5531 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5533 if (control->spec_flags & M_NOTIFICATION) {
5534 out_flags |= MSG_NOTIFICATION;
5536 /* we ate up the mbuf */
5537 if (in_flags & MSG_PEEK) {
5539 m = SCTP_BUF_NEXT(m);
5540 copied_so_far += cp_len;
5542 /* dispose of the mbuf */
5543 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5544 sctp_sblog(&so->so_rcv,
5545 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
5547 sctp_sbfree(control, stcb, &so->so_rcv, m);
5548 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5549 sctp_sblog(&so->so_rcv,
5550 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
5552 copied_so_far += cp_len;
5553 freed_so_far += cp_len;
5554 freed_so_far += MSIZE;
5555 atomic_subtract_int(&control->length, cp_len);
5556 control->data = sctp_m_free(m);
5559 * been through it all, must hold sb
5560 * lock ok to null tail
5562 if (control->data == NULL) {
5564 if ((control->end_added == 0) ||
5565 (TAILQ_NEXT(control, next) == NULL)) {
5573 if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
5574 panic("Hmm we don't own the lock?");
5578 control->tail_mbuf = NULL;
5580 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
5581 panic("end_added, nothing left and no MSG_EOR");
5587 /* Do we need to trim the mbuf? */
5588 if (control->spec_flags & M_NOTIFICATION) {
5589 out_flags |= MSG_NOTIFICATION;
5591 if ((in_flags & MSG_PEEK) == 0) {
5592 SCTP_BUF_RESV_UF(m, cp_len);
5593 SCTP_BUF_LEN(m) -= cp_len;
5594 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5595 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, cp_len);
5597 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len);
5598 if ((control->do_not_ref_stcb == 0) &&
5600 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len);
5602 copied_so_far += cp_len;
5603 freed_so_far += cp_len;
5604 freed_so_far += MSIZE;
5605 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5606 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
5607 SCTP_LOG_SBRESULT, 0);
5609 atomic_subtract_int(&control->length, cp_len);
5611 copied_so_far += cp_len;
5614 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
5617 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5618 (control->do_not_ref_stcb == 0) &&
5619 (freed_so_far >= rwnd_req)) {
5620 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5622 } /* end while(m) */
5624 * At this point we have looked at it all and we either have
5625 * a MSG_EOR/or read all the user wants... <OR>
5626 * control->length == 0.
5628 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
5629 /* we are done with this control */
5630 if (control->length == 0) {
5631 if (control->data) {
5633 panic("control->data not null at read eor?");
5635 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
5636 sctp_m_freem(control->data);
5637 control->data = NULL;
5641 if (TAILQ_NEXT(control, next) == NULL) {
5643 * If we don't have a next we need a
5644 * lock, if there is a next
5645 * interrupt is filling ahead of us
5646 * and we don't need a lock to
5647 * remove this guy (which is the
5648 * head of the queue).
5650 if (hold_rlock == 0) {
5651 SCTP_INP_READ_LOCK(inp);
5655 TAILQ_REMOVE(&inp->read_queue, control, next);
5656 /* Add back any hiddend data */
5657 if (control->held_length) {
5659 control->held_length = 0;
5660 wakeup_read_socket = 1;
5662 if (control->aux_data) {
5663 sctp_m_free(control->aux_data);
5664 control->aux_data = NULL;
5666 no_rcv_needed = control->do_not_ref_stcb;
5667 sctp_free_remote_addr(control->whoFrom);
5668 control->data = NULL;
5669 sctp_free_a_readq(stcb, control);
5671 if ((freed_so_far >= rwnd_req) &&
5672 (no_rcv_needed == 0))
5673 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5677 * The user did not read all of this
5678 * message, turn off the returned MSG_EOR
5679 * since we are leaving more behind on the
5683 if (control->end_added &&
5684 (control->data == NULL) &&
5685 (control->tail_mbuf == NULL)) {
5686 panic("Gak, control->length is corrupt?");
5689 no_rcv_needed = control->do_not_ref_stcb;
5690 out_flags &= ~MSG_EOR;
5693 if (out_flags & MSG_EOR) {
5696 if ((uio->uio_resid == 0) ||
5697 ((in_eeor_mode) && (copied_so_far >= max(so->so_rcv.sb_lowat, 1)))
5702 * If I hit here the receiver wants more and this message is
5703 * NOT done (pd-api). So two questions. Can we block? if not
5704 * we are done. Did the user NOT set MSG_WAITALL?
5706 if (block_allowed == 0) {
5710 * We need to wait for more data a few things: - We don't
5711 * sbunlock() so we don't get someone else reading. - We
5712 * must be sure to account for the case where what is added
5713 * is NOT to our control when we wakeup.
5717 * Do we need to tell the transport a rwnd update might be
5718 * needed before we go to sleep?
5720 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5721 ((freed_so_far >= rwnd_req) &&
5722 (control->do_not_ref_stcb == 0) &&
5723 (no_rcv_needed == 0))) {
5724 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5727 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
5730 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
5733 if (hold_rlock == 1) {
5734 SCTP_INP_READ_UNLOCK(inp);
5737 if (hold_sblock == 0) {
5738 SOCKBUF_LOCK(&so->so_rcv);
5741 if ((copied_so_far) && (control->length == 0) &&
5742 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
5745 if (so->so_rcv.sb_cc <= control->held_length) {
5746 error = sbwait(&so->so_rcv);
5750 control->held_length = 0;
5753 SOCKBUF_UNLOCK(&so->so_rcv);
5756 if (control->length == 0) {
5757 /* still nothing here */
5758 if (control->end_added == 1) {
5759 /* he aborted, or is done i.e.did a shutdown */
5760 out_flags |= MSG_EOR;
5761 if (control->pdapi_aborted) {
5762 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5763 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5765 out_flags |= MSG_TRUNC;
5767 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5768 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5770 goto done_with_control;
5772 if (so->so_rcv.sb_cc > held_length) {
5773 control->held_length = so->so_rcv.sb_cc;
5776 goto wait_some_more;
5777 } else if (control->data == NULL) {
5779 * we must re-sync since data is probably being
5782 SCTP_INP_READ_LOCK(inp);
5783 if ((control->length > 0) && (control->data == NULL)) {
5785 * big trouble.. we have the lock and its
5789 panic("Impossible data==NULL length !=0");
5791 out_flags |= MSG_EOR;
5792 out_flags |= MSG_TRUNC;
5793 control->length = 0;
5794 SCTP_INP_READ_UNLOCK(inp);
5795 goto done_with_control;
5797 SCTP_INP_READ_UNLOCK(inp);
5798 /* We will fall around to get more data */
5803 * Give caller back the mbuf chain,
5804 * store in uio_resid the length
5806 wakeup_read_socket = 0;
5807 if ((control->end_added == 0) ||
5808 (TAILQ_NEXT(control, next) == NULL)) {
5809 /* Need to get rlock */
5810 if (hold_rlock == 0) {
5811 SCTP_INP_READ_LOCK(inp);
5815 if (control->end_added) {
5816 out_flags |= MSG_EOR;
5817 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5818 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5820 if (control->spec_flags & M_NOTIFICATION) {
5821 out_flags |= MSG_NOTIFICATION;
5823 uio->uio_resid = control->length;
5824 *mp = control->data;
5827 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5828 sctp_sblog(&so->so_rcv,
5829 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
5831 sctp_sbfree(control, stcb, &so->so_rcv, m);
5832 freed_so_far += SCTP_BUF_LEN(m);
5833 freed_so_far += MSIZE;
5834 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5835 sctp_sblog(&so->so_rcv,
5836 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
5838 m = SCTP_BUF_NEXT(m);
5840 control->data = control->tail_mbuf = NULL;
5841 control->length = 0;
5842 if (out_flags & MSG_EOR) {
5843 /* Done with this control */
5844 goto done_with_control;
5848 if (hold_rlock == 1) {
5849 SCTP_INP_READ_UNLOCK(inp);
5852 if (hold_sblock == 1) {
5853 SOCKBUF_UNLOCK(&so->so_rcv);
5856 sbunlock(&so->so_rcv);
5861 SOCKBUF_UNLOCK(&so->so_rcv);
5864 if ((stcb) && (in_flags & MSG_PEEK) == 0) {
5865 if ((freed_so_far >= rwnd_req) &&
5866 (control && (control->do_not_ref_stcb == 0)) &&
5867 (no_rcv_needed == 0))
5868 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5872 *msg_flags = out_flags;
5874 if (((out_flags & MSG_EOR) == 0) &&
5875 ((in_flags & MSG_PEEK) == 0) &&
5877 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5878 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
5879 struct sctp_extrcvinfo *s_extra;
5881 s_extra = (struct sctp_extrcvinfo *)sinfo;
5882 s_extra->sreinfo_next_flags = SCTP_NO_NEXT_MSG;
5884 if (hold_rlock == 1) {
5885 SCTP_INP_READ_UNLOCK(inp);
5889 SOCKBUF_UNLOCK(&so->so_rcv);
5893 sbunlock(&so->so_rcv);
5895 if (freecnt_applied) {
5897 * The lock on the socket buffer protects us so the free
5898 * code will stop. But since we used the socketbuf lock and
5899 * the sender uses the tcb_lock to increment, we need to use
5900 * the atomic add to the refcnt.
5904 panic("stcb for refcnt has gone NULL?");
5910 atomic_add_int(&stcb->asoc.refcnt, -1);
5911 freecnt_applied = 0;
5912 /* Save the value back for next time */
5913 stcb->freed_by_sorcv_sincelast = freed_so_far;
5915 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5917 sctp_misc_ints(SCTP_SORECV_DONE,
5919 ((uio) ? (slen - uio->uio_resid) : slen),
5923 sctp_misc_ints(SCTP_SORECV_DONE,
5925 ((uio) ? (slen - uio->uio_resid) : slen),
5931 if (wakeup_read_socket) {
5932 sctp_sorwakeup(inp, so);
5938 #ifdef SCTP_MBUF_LOGGING
5940 sctp_m_free(struct mbuf *m)
5942 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
5943 if (SCTP_BUF_IS_EXTENDED(m)) {
5944 sctp_log_mb(m, SCTP_MBUF_IFREE);
5951 sctp_m_freem(struct mbuf *mb)
5954 mb = sctp_m_free(mb);
5960 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
5963 * Given a local address. For all associations that holds the
5964 * address, request a peer-set-primary.
5966 struct sctp_ifa *ifa;
5967 struct sctp_laddr *wi;
5969 ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0);
5971 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
5972 return (EADDRNOTAVAIL);
5975 * Now that we have the ifa we must awaken the iterator with this
5978 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
5980 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
5983 /* Now incr the count and int wi structure */
5984 SCTP_INCR_LADDR_COUNT();
5985 bzero(wi, sizeof(*wi));
5986 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
5988 wi->action = SCTP_SET_PRIM_ADDR;
5989 atomic_add_int(&ifa->refcount, 1);
5991 /* Now add it to the work queue */
5992 SCTP_WQ_ADDR_LOCK();
5994 * Should this really be a tailq? As it is we will process the
5997 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
5998 SCTP_WQ_ADDR_UNLOCK();
5999 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
6000 (struct sctp_inpcb *)NULL,
6001 (struct sctp_tcb *)NULL,
6002 (struct sctp_nets *)NULL);
6008 sctp_soreceive(struct socket *so,
6009 struct sockaddr **psa,
6012 struct mbuf **controlp,
6016 uint8_t sockbuf[256];
6017 struct sockaddr *from;
6018 struct sctp_extrcvinfo sinfo;
6019 int filling_sinfo = 1;
6020 struct sctp_inpcb *inp;
6022 inp = (struct sctp_inpcb *)so->so_pcb;
6023 /* pickup the assoc we are reading from */
6025 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6028 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
6029 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
6030 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
6031 (controlp == NULL)) {
6032 /* user does not want the sndrcv ctl */
6036 from = (struct sockaddr *)sockbuf;
6037 fromlen = sizeof(sockbuf);
6044 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp,
6045 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
6046 if ((controlp) && (filling_sinfo)) {
6047 /* copy back the sinfo in a CMSG format */
6049 *controlp = sctp_build_ctl_nchunk(inp,
6050 (struct sctp_sndrcvinfo *)&sinfo);
6055 /* copy back the address info */
6056 if (from && from->sa_len) {
6057 *psa = sodupsockaddr(from, M_NOWAIT);
6070 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
6071 int totaddr, int *error)
6075 struct sctp_inpcb *inp;
6076 struct sockaddr *sa;
6080 struct sockaddr_in *sin;
6084 struct sockaddr_in6 *sin6;
6089 inp = stcb->sctp_ep;
6091 for (i = 0; i < totaddr; i++) {
6092 switch (sa->sa_family) {
6095 incr = sizeof(struct sockaddr_in);
6096 sin = (struct sockaddr_in *)sa;
6097 if ((sin->sin_addr.s_addr == INADDR_ANY) ||
6098 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
6099 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
6100 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6101 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_7);
6105 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) {
6106 /* assoc gone no un-lock */
6107 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6108 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_7);
6117 incr = sizeof(struct sockaddr_in6);
6118 sin6 = (struct sockaddr_in6 *)sa;
6119 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
6120 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
6121 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6122 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_8);
6126 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) {
6127 /* assoc gone no un-lock */
6128 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6129 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_8);
6139 sa = (struct sockaddr *)((caddr_t)sa + incr);
6146 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
6147 int *totaddr, int *num_v4, int *num_v6, int *error,
6148 int limit, int *bad_addr)
6150 struct sockaddr *sa;
6151 struct sctp_tcb *stcb = NULL;
6157 *error = *num_v6 = *num_v4 = 0;
6158 /* account and validate addresses */
6159 for (i = 0; i < (size_t)*totaddr; i++) {
6160 switch (sa->sa_family) {
6164 incr = sizeof(struct sockaddr_in);
6165 if (sa->sa_len != incr) {
6166 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6176 struct sockaddr_in6 *sin6;
6178 sin6 = (struct sockaddr_in6 *)sa;
6179 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6180 /* Must be non-mapped for connectx */
6181 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6187 incr = sizeof(struct sockaddr_in6);
6188 if (sa->sa_len != incr) {
6189 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6202 if (i == (size_t)*totaddr) {
6205 SCTP_INP_INCR_REF(inp);
6206 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
6208 /* Already have or am bring up an association */
6211 SCTP_INP_DECR_REF(inp);
6213 if ((at + incr) > (size_t)limit) {
6217 sa = (struct sockaddr *)((caddr_t)sa + incr);
6219 return ((struct sctp_tcb *)NULL);
6223 * sctp_bindx(ADD) for one address.
6224 * assumes all arguments are valid/checked by caller.
6227 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
6228 struct sockaddr *sa, sctp_assoc_t assoc_id,
6229 uint32_t vrf_id, int *error, void *p)
6231 struct sockaddr *addr_touse;
6234 struct sockaddr_in sin;
6238 /* see if we're bound all already! */
6239 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6240 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6246 if (sa->sa_family == AF_INET6) {
6247 struct sockaddr_in6 *sin6;
6249 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6250 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6254 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6255 /* can only bind v6 on PF_INET6 sockets */
6256 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6260 sin6 = (struct sockaddr_in6 *)addr_touse;
6261 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6262 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6263 SCTP_IPV6_V6ONLY(inp)) {
6264 /* can't bind v4-mapped on PF_INET sockets */
6265 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6269 in6_sin6_2_sin(&sin, sin6);
6270 addr_touse = (struct sockaddr *)&sin;
6275 if (sa->sa_family == AF_INET) {
6276 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6277 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6281 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6282 SCTP_IPV6_V6ONLY(inp)) {
6283 /* can't bind v4 on PF_INET sockets */
6284 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6290 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
6292 /* Can't get proc for Net/Open BSD */
6293 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6297 *error = sctp_inpcb_bind(so, addr_touse, NULL, p);
6301 * No locks required here since bind and mgmt_ep_sa all do their own
6302 * locking. If we do something for the FIX: below we may need to
6303 * lock in that case.
6305 if (assoc_id == 0) {
6306 /* add the address */
6307 struct sctp_inpcb *lep;
6308 struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse;
6310 /* validate the incoming port */
6311 if ((lsin->sin_port != 0) &&
6312 (lsin->sin_port != inp->sctp_lport)) {
6313 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6317 /* user specified 0 port, set it to existing port */
6318 lsin->sin_port = inp->sctp_lport;
6321 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id);
6324 * We must decrement the refcount since we have the
6325 * ep already and are binding. No remove going on
6328 SCTP_INP_DECR_REF(lep);
6331 /* already bound to it.. ok */
6333 } else if (lep == NULL) {
6334 ((struct sockaddr_in *)addr_touse)->sin_port = 0;
6335 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6336 SCTP_ADD_IP_ADDRESS,
6339 *error = EADDRINUSE;
6345 * FIX: decide whether we allow assoc based bindx
6351 * sctp_bindx(DELETE) for one address.
6352 * assumes all arguments are valid/checked by caller.
6355 sctp_bindx_delete_address(struct socket *so, struct sctp_inpcb *inp,
6356 struct sockaddr *sa, sctp_assoc_t assoc_id,
6357 uint32_t vrf_id, int *error)
6359 struct sockaddr *addr_touse;
6362 struct sockaddr_in sin;
6366 /* see if we're bound all already! */
6367 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6368 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6373 #if defined(INET6) && !defined(__Userspace__) /* TODO port in6_sin6_2_sin */
6374 if (sa->sa_family == AF_INET6) {
6375 struct sockaddr_in6 *sin6;
6377 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6378 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6382 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6383 /* can only bind v6 on PF_INET6 sockets */
6384 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6388 sin6 = (struct sockaddr_in6 *)addr_touse;
6389 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6390 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6391 SCTP_IPV6_V6ONLY(inp)) {
6392 /* can't bind mapped-v4 on PF_INET sockets */
6393 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6397 in6_sin6_2_sin(&sin, sin6);
6398 addr_touse = (struct sockaddr *)&sin;
6403 if (sa->sa_family == AF_INET) {
6404 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6405 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6409 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6410 SCTP_IPV6_V6ONLY(inp)) {
6411 /* can't bind v4 on PF_INET sockets */
6412 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6419 * No lock required mgmt_ep_sa does its own locking. If the FIX:
6420 * below is ever changed we may need to lock before calling
6421 * association level binding.
6423 if (assoc_id == 0) {
6424 /* delete the address */
6425 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6426 SCTP_DEL_IP_ADDRESS,
6430 * FIX: decide whether we allow assoc based bindx
6436 * returns the valid local address count for an assoc, taking into account
6440 sctp_local_addr_count(struct sctp_tcb *stcb)
6442 int loopback_scope, ipv4_local_scope, local_scope, site_scope;
6443 int ipv4_addr_legal, ipv6_addr_legal;
6444 struct sctp_vrf *vrf;
6445 struct sctp_ifn *sctp_ifn;
6446 struct sctp_ifa *sctp_ifa;
6449 /* Turn on all the appropriate scopes */
6450 loopback_scope = stcb->asoc.loopback_scope;
6451 ipv4_local_scope = stcb->asoc.ipv4_local_scope;
6452 local_scope = stcb->asoc.local_scope;
6453 site_scope = stcb->asoc.site_scope;
6454 ipv4_addr_legal = ipv6_addr_legal = 0;
6455 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
6456 ipv6_addr_legal = 1;
6457 if (SCTP_IPV6_V6ONLY(stcb->sctp_ep) == 0) {
6458 ipv4_addr_legal = 1;
6461 ipv4_addr_legal = 1;
6464 SCTP_IPI_ADDR_RLOCK();
6465 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
6467 /* no vrf, no addresses */
6468 SCTP_IPI_ADDR_RUNLOCK();
6471 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6473 * bound all case: go through all ifns on the vrf
6475 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
6476 if ((loopback_scope == 0) &&
6477 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
6480 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
6481 if (sctp_is_addr_restricted(stcb, sctp_ifa))
6483 switch (sctp_ifa->address.sa.sa_family) {
6486 if (ipv4_addr_legal) {
6487 struct sockaddr_in *sin;
6489 sin = (struct sockaddr_in *)&sctp_ifa->address.sa;
6490 if (sin->sin_addr.s_addr == 0) {
6497 if ((ipv4_local_scope == 0) &&
6498 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
6501 /* count this one */
6510 if (ipv6_addr_legal) {
6511 struct sockaddr_in6 *sin6;
6513 sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa;
6514 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
6517 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
6518 if (local_scope == 0)
6520 if (sin6->sin6_scope_id == 0) {
6521 if (sa6_recoverscope(sin6) != 0)
6539 if ((site_scope == 0) &&
6540 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
6543 /* count this one */
6558 struct sctp_laddr *laddr;
6560 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
6562 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
6565 /* count this one */
6569 SCTP_IPI_ADDR_RUNLOCK();
6573 #if defined(SCTP_LOCAL_TRACE_BUF)
6576 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)
6578 uint32_t saveindex, newindex;
6581 saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
6582 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6585 newindex = saveindex + 1;
6587 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
6588 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6591 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
6592 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
6593 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
6594 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
6595 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
6596 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
6597 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
6598 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
6602 /* XXX: Remove the #ifdef after tunneling over IPv6 works also on FreeBSD. */
6604 /* We will need to add support
6605 * to bind the ports and such here
6606 * so we can do UDP tunneling. In
6607 * the mean-time, we return error
6609 #include <netinet/udp.h>
6610 #include <netinet/udp_var.h>
6611 #include <sys/proc.h>
6613 #include <netinet6/sctp6_var.h>
6617 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *ignored)
6620 struct mbuf *sp, *last;
6621 struct udphdr *uhdr;
6623 int header_size = sizeof(struct udphdr) + sizeof(struct sctphdr);
6626 * Split out the mbuf chain. Leave the IP header in m, place the
6629 if ((m->m_flags & M_PKTHDR) == 0) {
6630 /* Can't handle one that is not a pkt hdr */
6633 /* pull the src port */
6634 iph = mtod(m, struct ip *);
6635 uhdr = (struct udphdr *)((caddr_t)iph + off);
6637 port = uhdr->uh_sport;
6638 sp = m_split(m, off, M_DONTWAIT);
6640 /* Gak, drop packet, we can't do a split */
6643 if (sp->m_pkthdr.len < header_size) {
6644 /* Gak, packet can't have an SCTP header in it - to small */
6648 /* ok now pull up the UDP header and SCTP header together */
6649 sp = m_pullup(sp, header_size);
6651 /* Gak pullup failed */
6654 /* trim out the UDP header */
6655 m_adj(sp, sizeof(struct udphdr));
6657 /* Now reconstruct the mbuf chain */
6658 /* 1) find last one */
6660 while (last->m_next != NULL) {
6661 last = last->m_next;
6664 m->m_pkthdr.len += sp->m_pkthdr.len;
6666 while (last != NULL) {
6667 last = last->m_next;
6669 /* Now its ready for sctp_input or sctp6_input */
6670 iph = mtod(m, struct ip *);
6671 switch (iph->ip_v) {
6678 len = SCTP_GET_IPV4_LENGTH(iph);
6679 len -= sizeof(struct udphdr);
6680 SCTP_GET_IPV4_LENGTH(iph) = len;
6681 sctp_input_with_port(m, off, port);
6686 case IPV6_VERSION >> 4:
6688 /* its IPv6 - NOT supported */
6706 sctp_over_udp_stop(void)
6711 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
6714 if (SCTP_BASE_INFO(udp_tun_socket) == NULL) {
6718 sop = SCTP_BASE_INFO(udp_tun_socket);
6720 SCTP_BASE_INFO(udp_tun_socket) = NULL;
6724 sctp_over_udp_start(void)
6728 struct sockaddr_in sin;
6729 struct socket *sop = NULL;
6734 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
6737 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
6739 /* Must have a port set */
6742 if (SCTP_BASE_INFO(udp_tun_socket) != NULL) {
6743 /* Already running -- must stop first */
6747 cred = th->td_ucred;
6748 if ((ret = socreate(PF_INET, &sop,
6749 SOCK_DGRAM, IPPROTO_UDP, cred, th))) {
6752 SCTP_BASE_INFO(udp_tun_socket) = sop;
6753 /* call the special UDP hook */
6754 ret = udp_set_kernel_tunneling(sop, sctp_recv_udp_tunneled_packet);
6756 goto exit_stage_left;
6758 /* Ok we have a socket, bind it to the port */
6759 memset(&sin, 0, sizeof(sin));
6760 sin.sin_len = sizeof(sin);
6761 sin.sin_family = AF_INET;
6762 sin.sin_port = htons(port);
6763 ret = sobind(sop, (struct sockaddr *)&sin, th);
6765 /* Close up we cant get the port */
6767 sctp_over_udp_stop();
6771 * Ok we should now get UDP packets directly to our input routine
6772 * sctp_recv_upd_tunneled_packet().