1 /* $KAME: sctputil.c,v 1.36 2005/03/06 16:04:19 itojun Exp $ */
4 * Copyright (c) 2001, 2002, 2003, 2004 Cisco Systems, Inc.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Cisco Systems, Inc.
18 * 4. Neither the name of the project nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY CISCO SYSTEMS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL CISCO SYSTEMS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #if !(defined(__OpenBSD__) || defined(__APPLE__))
36 #include "opt_ipsec.h"
38 #if defined(__FreeBSD__) || defined(__DragonFly__)
39 #include "opt_compat.h"
40 #include "opt_inet6.h"
42 #if !(defined(SCTP_BASE_FREEBSD) || defined(__DragonFly__))
43 #include "opt_mpath.h"
44 #endif /* SCTP_BASE_FREEBSD || __DragonFly__ */
46 #if defined(__NetBSD__)
51 #elif !defined(__OpenBSD__)
55 #include <sys/param.h>
56 #include <sys/systm.h>
57 #include <sys/malloc.h>
59 #include <sys/domain.h>
60 #include <sys/protosw.h>
61 #include <sys/socket.h>
62 #include <sys/socketvar.h>
64 #include <sys/kernel.h>
65 #include <sys/sysctl.h>
66 #include <sys/thread2.h>
68 #if defined(__FreeBSD__) || defined(__DragonFly__)
69 #include <sys/callout.h>
71 #include <netinet/sctp_callout.h> /* for callout_active() */
74 #include <net/radix.h>
75 #include <net/route.h>
79 #include <sys/domain.h>
83 #if (defined(__FreeBSD__) && __FreeBSD_version >= 500000)
84 #include <sys/limits.h>
86 #include <machine/limits.h>
90 #include <net/if_types.h>
91 #include <net/route.h>
93 #include <netinet/in.h>
94 #include <netinet/in_systm.h>
95 #include <netinet/ip.h>
96 #include <netinet/in_pcb.h>
97 #include <netinet/in_var.h>
98 #include <netinet/ip_var.h>
101 #include <netinet/ip6.h>
102 #include <netinet6/ip6_var.h>
104 #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__APPLE__) || defined(__DragonFly_)
105 #include <netinet6/in6_pcb.h>
106 #elif defined(__OpenBSD__)
107 #include <netinet/in_pcb.h>
112 #include <netinet/sctp_pcb.h>
116 #include <netinet6/ipsec.h>
117 #include <netproto/key/key.h>
123 #include <netinet/sctputil.h>
124 #include <netinet/sctp_var.h>
126 #include <netinet6/sctp6_var.h>
128 #include <netinet/sctp_header.h>
129 #include <netinet/sctp_output.h>
130 #include <netinet/sctp_hashdriver.h>
131 #include <netinet/sctp_uio.h>
132 #include <netinet/sctp_timer.h>
133 #include <netinet/sctp_crc32.h>
134 #include <netinet/sctp_indata.h> /* for sctp_deliver_data() */
135 #define NUMBER_OF_MTU_SIZES 18
138 extern u_int32_t sctp_debug_on;
141 #ifdef SCTP_STAT_LOGGING
142 int sctp_cwnd_log_at=0;
143 int sctp_cwnd_log_rolled=0;
144 struct sctp_cwnd_log sctp_clog[SCTP_STAT_LOG_SIZE];
147 sctp_clr_stat_log(void)
150 sctp_cwnd_log_rolled=0;
154 sctp_log_strm_del_alt(u_int32_t tsn, u_int16_t sseq, int from)
157 sctp_clog[sctp_cwnd_log_at].from = (u_int8_t)from;
158 sctp_clog[sctp_cwnd_log_at].event_type = (u_int8_t)SCTP_LOG_EVENT_STRM;
159 sctp_clog[sctp_cwnd_log_at].x.strlog.n_tsn = tsn;
160 sctp_clog[sctp_cwnd_log_at].x.strlog.n_sseq = sseq;
161 sctp_clog[sctp_cwnd_log_at].x.strlog.e_tsn = 0;
162 sctp_clog[sctp_cwnd_log_at].x.strlog.e_sseq = 0;
164 if (sctp_cwnd_log_at >= SCTP_STAT_LOG_SIZE) {
165 sctp_cwnd_log_at = 0;
166 sctp_cwnd_log_rolled = 1;
173 sctp_log_map(uint32_t map, uint32_t cum, uint32_t high, int from)
176 sctp_clog[sctp_cwnd_log_at].from = (u_int8_t)from;
177 sctp_clog[sctp_cwnd_log_at].event_type = (u_int8_t)SCTP_LOG_EVENT_MAP;
178 sctp_clog[sctp_cwnd_log_at].x.map.base = map;
179 sctp_clog[sctp_cwnd_log_at].x.map.cum = cum;
180 sctp_clog[sctp_cwnd_log_at].x.map.high = high;
182 if (sctp_cwnd_log_at >= SCTP_STAT_LOG_SIZE) {
183 sctp_cwnd_log_at = 0;
184 sctp_cwnd_log_rolled = 1;
189 sctp_log_fr(uint32_t biggest_tsn, uint32_t biggest_new_tsn, uint32_t tsn,
193 sctp_clog[sctp_cwnd_log_at].from = (u_int8_t)from;
194 sctp_clog[sctp_cwnd_log_at].event_type = (u_int8_t)SCTP_LOG_EVENT_FR;
195 sctp_clog[sctp_cwnd_log_at].x.fr.largest_tsn = biggest_tsn;
196 sctp_clog[sctp_cwnd_log_at].x.fr.largest_new_tsn = biggest_new_tsn;
197 sctp_clog[sctp_cwnd_log_at].x.fr.tsn = tsn;
199 if (sctp_cwnd_log_at >= SCTP_STAT_LOG_SIZE) {
200 sctp_cwnd_log_at = 0;
201 sctp_cwnd_log_rolled = 1;
206 sctp_log_strm_del(struct sctp_tmit_chunk *chk, struct sctp_tmit_chunk *poschk,
211 kprintf("Gak log of NULL?\n");
214 sctp_clog[sctp_cwnd_log_at].from = (u_int8_t)from;
215 sctp_clog[sctp_cwnd_log_at].event_type = (u_int8_t)SCTP_LOG_EVENT_STRM;
216 sctp_clog[sctp_cwnd_log_at].x.strlog.n_tsn = chk->rec.data.TSN_seq;
217 sctp_clog[sctp_cwnd_log_at].x.strlog.n_sseq = chk->rec.data.stream_seq;
218 if (poschk != NULL) {
219 sctp_clog[sctp_cwnd_log_at].x.strlog.e_tsn =
220 poschk->rec.data.TSN_seq;
221 sctp_clog[sctp_cwnd_log_at].x.strlog.e_sseq =
222 poschk->rec.data.stream_seq;
224 sctp_clog[sctp_cwnd_log_at].x.strlog.e_tsn = 0;
225 sctp_clog[sctp_cwnd_log_at].x.strlog.e_sseq = 0;
228 if (sctp_cwnd_log_at >= SCTP_STAT_LOG_SIZE) {
229 sctp_cwnd_log_at = 0;
230 sctp_cwnd_log_rolled = 1;
235 sctp_log_cwnd(struct sctp_nets *net, int augment, uint8_t from)
238 sctp_clog[sctp_cwnd_log_at].from = (u_int8_t)from;
239 sctp_clog[sctp_cwnd_log_at].event_type = (u_int8_t)SCTP_LOG_EVENT_CWND;
240 sctp_clog[sctp_cwnd_log_at].x.cwnd.net = net;
241 sctp_clog[sctp_cwnd_log_at].x.cwnd.cwnd_new_value = net->cwnd;
242 sctp_clog[sctp_cwnd_log_at].x.cwnd.inflight = net->flight_size;
243 sctp_clog[sctp_cwnd_log_at].x.cwnd.cwnd_augment = augment;
245 if (sctp_cwnd_log_at >= SCTP_STAT_LOG_SIZE) {
246 sctp_cwnd_log_at = 0;
247 sctp_cwnd_log_rolled = 1;
252 sctp_log_maxburst(struct sctp_nets *net, int error, int burst, uint8_t from)
254 sctp_clog[sctp_cwnd_log_at].from = (u_int8_t)from;
255 sctp_clog[sctp_cwnd_log_at].event_type = (u_int8_t)SCTP_LOG_EVENT_MAXBURST;
256 sctp_clog[sctp_cwnd_log_at].x.cwnd.net = net;
257 sctp_clog[sctp_cwnd_log_at].x.cwnd.cwnd_new_value = error;
258 sctp_clog[sctp_cwnd_log_at].x.cwnd.inflight = net->flight_size;
259 sctp_clog[sctp_cwnd_log_at].x.cwnd.cwnd_augment = burst;
261 if (sctp_cwnd_log_at >= SCTP_STAT_LOG_SIZE) {
262 sctp_cwnd_log_at = 0;
263 sctp_cwnd_log_rolled = 1;
268 sctp_log_rwnd(uint8_t from, u_int32_t peers_rwnd , u_int32_t snd_size, u_int32_t overhead)
270 sctp_clog[sctp_cwnd_log_at].from = (u_int8_t)from;
271 sctp_clog[sctp_cwnd_log_at].event_type = (u_int8_t)SCTP_LOG_EVENT_RWND;
272 sctp_clog[sctp_cwnd_log_at].x.rwnd.rwnd = peers_rwnd;
273 sctp_clog[sctp_cwnd_log_at].x.rwnd.send_size = snd_size;
274 sctp_clog[sctp_cwnd_log_at].x.rwnd.overhead = overhead;
275 sctp_clog[sctp_cwnd_log_at].x.rwnd.new_rwnd = 0;
277 if (sctp_cwnd_log_at >= SCTP_STAT_LOG_SIZE) {
278 sctp_cwnd_log_at = 0;
279 sctp_cwnd_log_rolled = 1;
284 sctp_log_rwnd_set(uint8_t from, u_int32_t peers_rwnd , u_int32_t flight_size, u_int32_t overhead, u_int32_t a_rwndval)
286 sctp_clog[sctp_cwnd_log_at].from = (u_int8_t)from;
287 sctp_clog[sctp_cwnd_log_at].event_type = (u_int8_t)SCTP_LOG_EVENT_RWND;
288 sctp_clog[sctp_cwnd_log_at].x.rwnd.rwnd = peers_rwnd;
289 sctp_clog[sctp_cwnd_log_at].x.rwnd.send_size = flight_size;
290 sctp_clog[sctp_cwnd_log_at].x.rwnd.overhead = overhead;
291 sctp_clog[sctp_cwnd_log_at].x.rwnd.new_rwnd = a_rwndval;
293 if (sctp_cwnd_log_at >= SCTP_STAT_LOG_SIZE) {
294 sctp_cwnd_log_at = 0;
295 sctp_cwnd_log_rolled = 1;
300 sctp_log_mbcnt(uint8_t from, u_int32_t total_oq , u_int32_t book, u_int32_t total_mbcnt_q, u_int32_t mbcnt)
302 sctp_clog[sctp_cwnd_log_at].from = (u_int8_t)from;
303 sctp_clog[sctp_cwnd_log_at].event_type = (u_int8_t)SCTP_LOG_EVENT_MBCNT;
304 sctp_clog[sctp_cwnd_log_at].x.mbcnt.total_queue_size = total_oq;
305 sctp_clog[sctp_cwnd_log_at].x.mbcnt.size_change = book;
306 sctp_clog[sctp_cwnd_log_at].x.mbcnt.total_queue_mb_size = total_mbcnt_q;
307 sctp_clog[sctp_cwnd_log_at].x.mbcnt.mbcnt_change = mbcnt;
309 if (sctp_cwnd_log_at >= SCTP_STAT_LOG_SIZE) {
310 sctp_cwnd_log_at = 0;
311 sctp_cwnd_log_rolled = 1;
316 sctp_log_block(uint8_t from, struct socket *so, struct sctp_association *asoc)
319 sctp_clog[sctp_cwnd_log_at].from = (u_int8_t)from;
320 sctp_clog[sctp_cwnd_log_at].event_type = (u_int8_t)SCTP_LOG_EVENT_BLOCK;
321 sctp_clog[sctp_cwnd_log_at].x.blk.maxmb = (u_int16_t)(so->so_snd.ssb_mbmax/1024);
322 sctp_clog[sctp_cwnd_log_at].x.blk.onmb = asoc->total_output_mbuf_queue_size;
323 sctp_clog[sctp_cwnd_log_at].x.blk.maxsb = (u_int16_t)(so->so_snd.ssb_hiwat/1024);
324 sctp_clog[sctp_cwnd_log_at].x.blk.onsb = asoc->total_output_queue_size;
325 sctp_clog[sctp_cwnd_log_at].x.blk.send_sent_qcnt = (u_int16_t)(asoc->send_queue_cnt + asoc->sent_queue_cnt);
326 sctp_clog[sctp_cwnd_log_at].x.blk.stream_qcnt = (u_int16_t)asoc->stream_queue_cnt;
328 if (sctp_cwnd_log_at >= SCTP_STAT_LOG_SIZE) {
329 sctp_cwnd_log_at = 0;
330 sctp_cwnd_log_rolled = 1;
335 sctp_fill_stat_log(struct mbuf *m)
337 struct sctp_cwnd_log_req *req;
338 int size_limit, num, i, at, cnt_out=0;
343 size_limit = (m->m_len - sizeof(struct sctp_cwnd_log_req));
344 if (size_limit < sizeof(struct sctp_cwnd_log)) {
347 req = mtod(m, struct sctp_cwnd_log_req *);
348 num = size_limit/sizeof(struct sctp_cwnd_log);
349 if (sctp_cwnd_log_rolled) {
350 req->num_in_log = SCTP_STAT_LOG_SIZE;
352 req->num_in_log = sctp_cwnd_log_at;
353 /* if the log has not rolled, we don't
354 * let you have old data.
356 if (req->end_at > sctp_cwnd_log_at) {
357 req->end_at = sctp_cwnd_log_at;
360 if ((num < SCTP_STAT_LOG_SIZE) &&
361 ((sctp_cwnd_log_rolled) || (sctp_cwnd_log_at > num))) {
362 /* we can't return all of it */
363 if (((req->start_at == 0) && (req->end_at == 0)) ||
364 (req->start_at >= SCTP_STAT_LOG_SIZE) ||
365 (req->end_at >= SCTP_STAT_LOG_SIZE)) {
366 /* No user request or user is wacked. */
368 req->end_at = sctp_cwnd_log_at - 1;
369 if ((sctp_cwnd_log_at - num) < 0) {
371 cc = num - sctp_cwnd_log_at;
372 req->start_at = SCTP_STAT_LOG_SIZE - cc;
374 req->start_at = sctp_cwnd_log_at - num;
379 if (req->start_at > req->end_at) {
380 cc = (SCTP_STAT_LOG_SIZE - req->start_at) +
384 cc = req->end_at - req->start_at;
392 /* We can return all of it */
394 req->end_at = sctp_cwnd_log_at - 1;
395 req->num_ret = sctp_cwnd_log_at;
397 for (i = 0, at = req->start_at; i < req->num_ret; i++) {
398 req->log[i] = sctp_clog[at];
401 if (at >= SCTP_STAT_LOG_SIZE)
404 m->m_len = (cnt_out * sizeof(struct sctp_cwnd_log_req)) + sizeof(struct sctp_cwnd_log_req);
410 #ifdef SCTP_AUDITING_ENABLED
411 u_int8_t sctp_audit_data[SCTP_AUDIT_SIZE][2];
412 static int sctp_audit_indx = 0;
415 sctp_print_audit_report(void)
420 for (i=sctp_audit_indx;i<SCTP_AUDIT_SIZE;i++) {
421 if ((sctp_audit_data[i][0] == 0xe0) &&
422 (sctp_audit_data[i][1] == 0x01)) {
425 } else if (sctp_audit_data[i][0] == 0xf0) {
428 } else if ((sctp_audit_data[i][0] == 0xc0) &&
429 (sctp_audit_data[i][1] == 0x01)) {
433 kprintf("%2.2x%2.2x ", (uint32_t)sctp_audit_data[i][0],
434 (uint32_t)sctp_audit_data[i][1]);
439 for (i=0;i<sctp_audit_indx;i++) {
440 if ((sctp_audit_data[i][0] == 0xe0) &&
441 (sctp_audit_data[i][1] == 0x01)) {
444 } else if (sctp_audit_data[i][0] == 0xf0) {
447 } else if ((sctp_audit_data[i][0] == 0xc0) &&
448 (sctp_audit_data[i][1] == 0x01)) {
452 kprintf("%2.2x%2.2x ", (uint32_t)sctp_audit_data[i][0],
453 (uint32_t)sctp_audit_data[i][1]);
462 sctp_auditing(int from, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
463 struct sctp_nets *net)
465 int resend_cnt, tot_out, rep, tot_book_cnt;
466 struct sctp_nets *lnet;
467 struct sctp_tmit_chunk *chk;
469 sctp_audit_data[sctp_audit_indx][0] = 0xAA;
470 sctp_audit_data[sctp_audit_indx][1] = 0x000000ff & from;
472 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
476 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
477 sctp_audit_data[sctp_audit_indx][1] = 0x01;
479 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
485 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
486 sctp_audit_data[sctp_audit_indx][1] = 0x02;
488 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
493 sctp_audit_data[sctp_audit_indx][0] = 0xA1;
494 sctp_audit_data[sctp_audit_indx][1] =
495 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
497 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
502 resend_cnt = tot_out = 0;
503 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
504 if (chk->sent == SCTP_DATAGRAM_RESEND) {
506 } else if (chk->sent < SCTP_DATAGRAM_RESEND) {
507 tot_out += chk->book_size;
511 if (resend_cnt != stcb->asoc.sent_queue_retran_cnt) {
512 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
513 sctp_audit_data[sctp_audit_indx][1] = 0xA1;
515 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
518 kprintf("resend_cnt:%d asoc-tot:%d\n",
519 resend_cnt, stcb->asoc.sent_queue_retran_cnt);
521 stcb->asoc.sent_queue_retran_cnt = resend_cnt;
522 sctp_audit_data[sctp_audit_indx][0] = 0xA2;
523 sctp_audit_data[sctp_audit_indx][1] =
524 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
526 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
530 if (tot_out != stcb->asoc.total_flight) {
531 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
532 sctp_audit_data[sctp_audit_indx][1] = 0xA2;
534 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
538 kprintf("tot_flt:%d asoc_tot:%d\n", tot_out,
539 (int)stcb->asoc.total_flight);
540 stcb->asoc.total_flight = tot_out;
542 if (tot_book_cnt != stcb->asoc.total_flight_count) {
543 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
544 sctp_audit_data[sctp_audit_indx][1] = 0xA5;
546 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
550 kprintf("tot_flt_book:%d\n", tot_book);
552 stcb->asoc.total_flight_count = tot_book_cnt;
555 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
556 tot_out += lnet->flight_size;
558 if (tot_out != stcb->asoc.total_flight) {
559 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
560 sctp_audit_data[sctp_audit_indx][1] = 0xA3;
562 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
566 kprintf("real flight:%d net total was %d\n",
567 stcb->asoc.total_flight, tot_out);
568 /* now corrective action */
569 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
571 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
572 if ((chk->whoTo == lnet) &&
573 (chk->sent < SCTP_DATAGRAM_RESEND)) {
574 tot_out += chk->book_size;
577 if (lnet->flight_size != tot_out) {
578 kprintf("net:%x flight was %d corrected to %d\n",
579 (uint32_t)lnet, lnet->flight_size, tot_out);
580 lnet->flight_size = tot_out;
587 sctp_print_audit_report();
592 sctp_audit_log(u_int8_t ev, u_int8_t fd)
595 sctp_audit_data[sctp_audit_indx][0] = ev;
596 sctp_audit_data[sctp_audit_indx][1] = fd;
598 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
607 * a list of sizes based on typical mtu's, used only if next hop
610 static int sctp_mtu_sizes[] = {
632 find_next_best_mtu(int totsz)
636 * if we are in here we must find the next best fit based on the
637 * size of the dg that failed to be sent.
640 for (i = 0; i < NUMBER_OF_MTU_SIZES; i++) {
641 if (totsz < sctp_mtu_sizes[i]) {
648 return (sctp_mtu_sizes[perfer]);
652 sctp_fill_random_store(struct sctp_pcb *m)
655 * Here we use the MD5/SHA-1 to hash with our good randomNumbers
656 * and our counter. The result becomes our good random numbers and
657 * we then setup to give these out. Note that we do no lockig
658 * to protect this. This is ok, since if competing folks call
659 * this we will get more gobbled gook in the random store whic
660 * is what we want. There is a danger that two guys will use
661 * the same random numbers, but thats ok too since that
662 * is random as well :->
665 sctp_hash_digest((char *)m->random_numbers, sizeof(m->random_numbers),
666 (char *)&m->random_counter, sizeof(m->random_counter),
667 (char *)m->random_store);
672 sctp_select_initial_TSN(struct sctp_pcb *m)
675 * A true implementation should use random selection process to
676 * get the initial stream sequence number, using RFC1750 as a
682 if (m->initial_sequence_debug != 0) {
684 ret = m->initial_sequence_debug;
685 m->initial_sequence_debug++;
688 if ((m->store_at+sizeof(u_long)) > SCTP_SIGNATURE_SIZE) {
689 /* Refill the random store */
690 sctp_fill_random_store(m);
692 p = &m->random_store[(int)m->store_at];
695 m->store_at += sizeof(u_long);
700 sctp_select_a_tag(struct sctp_inpcb *m)
705 SCTP_GETTIME_TIMEVAL(&now);
708 x = sctp_select_initial_TSN(&m->sctp_ep);
713 if (sctp_is_vtag_good(m, x, &now)) {
722 sctp_init_asoc(struct sctp_inpcb *m, struct sctp_association *asoc,
723 int for_a_init, uint32_t override_tag )
726 * Anything set to zero is taken care of by the allocation
731 * Up front select what scoping to apply on addresses I tell my peer
732 * Not sure what to do with these right now, we will need to come up
733 * with a way to set them. We may need to pass them through from the
734 * caller in the sctp_aloc_assoc() function.
737 /* init all variables to a known value.*/
738 asoc->state = SCTP_STATE_INUSE;
739 asoc->max_burst = m->sctp_ep.max_burst;
740 asoc->heart_beat_delay = m->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT];
741 asoc->cookie_life = m->sctp_ep.def_cookie_life;
744 asoc->my_vtag = override_tag;
746 asoc->my_vtag = sctp_select_a_tag(m);
748 asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number = asoc->sending_seq =
749 sctp_select_initial_TSN(&m->sctp_ep);
750 asoc->t3timeout_highest_marked = asoc->asconf_seq_out;
751 /* we are opptimisitic here */
752 asoc->peer_supports_asconf = 1;
753 asoc->peer_supports_asconf_setprim = 1;
754 asoc->peer_supports_pktdrop = 1;
756 asoc->sent_queue_retran_cnt = 0;
757 /* This will need to be adjusted */
758 asoc->last_cwr_tsn = asoc->init_seq_number - 1;
759 asoc->last_acked_seq = asoc->init_seq_number - 1;
760 asoc->advanced_peer_ack_point = asoc->last_acked_seq;
761 asoc->asconf_seq_in = asoc->last_acked_seq;
763 /* here we are different, we hold the next one we expect */
764 asoc->str_reset_seq_in = asoc->last_acked_seq + 1;
766 asoc->initial_init_rto_max = m->sctp_ep.initial_init_rto_max;
767 asoc->initial_rto = m->sctp_ep.initial_rto;
769 asoc->max_init_times = m->sctp_ep.max_init_times;
770 asoc->max_send_times = m->sctp_ep.max_send_times;
771 asoc->def_net_failure = m->sctp_ep.def_net_failure;
773 /* ECN Nonce initialization */
774 asoc->ecn_nonce_allowed = 0;
775 asoc->receiver_nonce_sum = 1;
776 asoc->nonce_sum_expect_base = 1;
777 asoc->nonce_sum_check = 1;
778 asoc->nonce_resync_tsn = 0;
779 asoc->nonce_wait_for_ecne = 0;
780 asoc->nonce_wait_tsn = 0;
782 if (m->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
786 /* Its a V6 socket */
787 inp6 = (struct in6pcb *)m;
788 asoc->ipv6_addr_legal = 1;
789 /* Now look at the binding flag to see if V4 will be legal */
791 #if defined(__OpenBSD__)
792 (0) /* we always do dual bind */
793 #elif defined (__NetBSD__)
794 (inp6->in6p_flags & IN6P_IPV6_V6ONLY)
796 (inp6->inp_flags & IN6P_IPV6_V6ONLY)
799 asoc->ipv4_addr_legal = 1;
801 /* V4 addresses are NOT legal on the association */
802 asoc->ipv4_addr_legal = 0;
805 /* Its a V4 socket, no - V6 */
806 asoc->ipv4_addr_legal = 1;
807 asoc->ipv6_addr_legal = 0;
811 asoc->my_rwnd = max(m->sctp_socket->so_rcv.ssb_hiwat, SCTP_MINIMAL_RWND);
812 asoc->peers_rwnd = m->sctp_socket->so_rcv.ssb_hiwat;
814 asoc->smallest_mtu = m->sctp_frag_point;
815 asoc->minrto = m->sctp_ep.sctp_minrto;
816 asoc->maxrto = m->sctp_ep.sctp_maxrto;
818 LIST_INIT(&asoc->sctp_local_addr_list);
819 TAILQ_INIT(&asoc->nets);
820 TAILQ_INIT(&asoc->pending_reply_queue);
821 asoc->last_asconf_ack_sent = NULL;
822 /* Setup to fill the hb random cache at first HB */
823 asoc->hb_random_idx = 4;
825 asoc->sctp_autoclose_ticks = m->sctp_ep.auto_close_time;
828 * Now the stream parameters, here we allocate space for all
829 * streams that we request by default.
831 asoc->streamoutcnt = asoc->pre_open_streams =
832 m->sctp_ep.pre_open_stream_count;
833 asoc->strmout = kmalloc(asoc->streamoutcnt * sizeof(struct sctp_stream_out),
835 if (asoc->strmout == NULL) {
836 /* big trouble no memory */
839 for (i = 0; i < asoc->streamoutcnt; i++) {
841 * inbound side must be set to 0xffff,
842 * also NOTE when we get the INIT-ACK back (for INIT sender)
843 * we MUST reduce the count (streamoutcnt) but first check
844 * if we sent to any of the upper streams that were dropped
845 * (if some were). Those that were dropped must be notified
846 * to the upper layer as failed to send.
848 asoc->strmout[i].next_sequence_sent = 0x0;
849 TAILQ_INIT(&asoc->strmout[i].outqueue);
850 asoc->strmout[i].stream_no = i;
851 asoc->strmout[i].next_spoke.tqe_next = 0;
852 asoc->strmout[i].next_spoke.tqe_prev = 0;
854 /* Now the mapping array */
855 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
857 asoc->mapping_array = kmalloc(SCTP_INITIAL_MAPPING_ARRAY, M_PCB,
860 asoc->mapping_array = kmalloc(asoc->mapping_array_size, M_PCB,
863 if (asoc->mapping_array == NULL) {
864 kfree(asoc->strmout, M_PCB);
867 memset(asoc->mapping_array, 0, asoc->mapping_array_size);
868 /* Now the init of the other outqueues */
869 TAILQ_INIT(&asoc->out_wheel);
870 TAILQ_INIT(&asoc->control_send_queue);
871 TAILQ_INIT(&asoc->send_queue);
872 TAILQ_INIT(&asoc->sent_queue);
873 TAILQ_INIT(&asoc->reasmqueue);
874 TAILQ_INIT(&asoc->delivery_queue);
875 asoc->max_inbound_streams = m->sctp_ep.max_open_streams_intome;
877 TAILQ_INIT(&asoc->asconf_queue);
882 sctp_expand_mapping_array(struct sctp_association *asoc)
884 /* mapping array needs to grow */
888 new_size = asoc->mapping_array_size + SCTP_MAPPING_ARRAY_INCR;
890 new_array = kmalloc(asoc->mapping_array_size + SCTP_MAPPING_ARRAY_INCR,
893 new_array = kmalloc(new_size, M_PCB, M_NOWAIT);
895 if (new_array == NULL) {
896 /* can't get more, forget it */
897 kprintf("No memory for expansion of SCTP mapping array %d\n",
901 memset(new_array, 0, new_size);
902 memcpy(new_array, asoc->mapping_array, asoc->mapping_array_size);
903 kfree(asoc->mapping_array, M_PCB);
904 asoc->mapping_array = new_array;
905 asoc->mapping_array_size = new_size;
910 sctp_timeout_handler(void *t)
912 struct sctp_inpcb *inp;
913 struct sctp_tcb *stcb;
914 struct sctp_nets *net;
915 struct sctp_timer *tmr;
917 #if defined(__APPLE__)
918 boolean_t funnel_state;
920 /* get BSD kernel funnel/mutex */
921 funnel_state = thread_funnel_set(network_flock, TRUE);
925 tmr = (struct sctp_timer *)t;
926 inp = (struct sctp_inpcb *)tmr->ep;
927 stcb = (struct sctp_tcb *)tmr->tcb;
928 net = (struct sctp_nets *)tmr->net;
932 #ifdef SCTP_AUDITING_ENABLED
933 sctp_audit_log(0xF0, (u_int8_t)tmr->type);
934 sctp_auditing(3, inp, stcb, net);
936 sctp_pegs[SCTP_TIMERS_EXP]++;
944 if (inp->sctp_socket == 0) {
946 #if defined(__APPLE__)
947 /* release BSD kernel funnel/mutex */
948 thread_funnel_set(network_flock, FALSE);
950 SCTP_INP_WUNLOCK(inp);
954 if (stcb->asoc.state == 0) {
956 #if defined(__APPLE__)
957 /* release BSD kernel funnel/mutex */
958 thread_funnel_set(network_flock, FALSE);
960 SCTP_INP_WUNLOCK(inp);
965 if (sctp_debug_on & SCTP_DEBUG_TIMER1) {
966 kprintf("Timer type %d goes off\n", tmr->type);
968 #endif /* SCTP_DEBUG */
970 if (!callout_active(&tmr->timer)) {
972 #if defined(__APPLE__)
973 /* release BSD kernel funnel/mutex */
974 thread_funnel_set(network_flock, FALSE);
976 SCTP_INP_WUNLOCK(inp);
980 #if defined(__APPLE__)
981 /* clear the callout pending status here */
982 callout_stop(&tmr->timer);
987 SCTP_INP_INCR_REF(inp);
988 SCTP_INP_WUNLOCK(inp);
992 case SCTP_TIMER_TYPE_ITERATOR:
994 struct sctp_iterator *it;
995 it = (struct sctp_iterator *)inp;
996 sctp_iterator_timer(it);
999 /* call the handler for the appropriate timer type */
1000 case SCTP_TIMER_TYPE_SEND:
1001 sctp_pegs[SCTP_TMIT_TIMER]++;
1002 stcb->asoc.num_send_timers_up--;
1003 if (stcb->asoc.num_send_timers_up < 0) {
1004 stcb->asoc.num_send_timers_up = 0;
1006 if (sctp_t3rxt_timer(inp, stcb, net)) {
1007 /* no need to unlock on tcb its gone */
1011 #ifdef SCTP_AUDITING_ENABLED
1012 sctp_auditing(4, inp, stcb, net);
1014 sctp_chunk_output(inp, stcb, 1);
1015 if ((stcb->asoc.num_send_timers_up == 0) &&
1016 (stcb->asoc.sent_queue_cnt > 0)
1018 struct sctp_tmit_chunk *chk;
1020 * safeguard. If there on some on the sent queue
1021 * somewhere but no timers running something is
1022 * wrong... so we start a timer on the first chunk
1023 * on the send queue on whatever net it is sent to.
1025 sctp_pegs[SCTP_T3_SAFEGRD]++;
1026 chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
1027 sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb,
1031 case SCTP_TIMER_TYPE_INIT:
1032 if (sctp_t1init_timer(inp, stcb, net)) {
1033 /* no need to unlock on tcb its gone */
1036 /* We do output but not here */
1039 case SCTP_TIMER_TYPE_RECV:
1040 sctp_pegs[SCTP_RECV_TIMER]++;
1041 sctp_send_sack(stcb);
1042 #ifdef SCTP_AUDITING_ENABLED
1043 sctp_auditing(4, inp, stcb, net);
1045 sctp_chunk_output(inp, stcb, 4);
1047 case SCTP_TIMER_TYPE_SHUTDOWN:
1048 if (sctp_shutdown_timer(inp, stcb, net) ) {
1049 /* no need to unlock on tcb its gone */
1052 #ifdef SCTP_AUDITING_ENABLED
1053 sctp_auditing(4, inp, stcb, net);
1055 sctp_chunk_output(inp, stcb, 5);
1057 case SCTP_TIMER_TYPE_HEARTBEAT:
1058 if (sctp_heartbeat_timer(inp, stcb, net)) {
1059 /* no need to unlock on tcb its gone */
1062 #ifdef SCTP_AUDITING_ENABLED
1063 sctp_auditing(4, inp, stcb, net);
1065 sctp_chunk_output(inp, stcb, 6);
1067 case SCTP_TIMER_TYPE_COOKIE:
1068 if (sctp_cookie_timer(inp, stcb, net)) {
1069 /* no need to unlock on tcb its gone */
1072 #ifdef SCTP_AUDITING_ENABLED
1073 sctp_auditing(4, inp, stcb, net);
1075 sctp_chunk_output(inp, stcb, 1);
1077 case SCTP_TIMER_TYPE_NEWCOOKIE:
1081 SCTP_GETTIME_TIMEVAL(&tv);
1082 SCTP_INP_WLOCK(inp);
1083 inp->sctp_ep.time_of_secret_change = tv.tv_sec;
1084 inp->sctp_ep.last_secret_number =
1085 inp->sctp_ep.current_secret_number;
1086 inp->sctp_ep.current_secret_number++;
1087 if (inp->sctp_ep.current_secret_number >=
1088 SCTP_HOW_MANY_SECRETS) {
1089 inp->sctp_ep.current_secret_number = 0;
1091 secret = (int)inp->sctp_ep.current_secret_number;
1092 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
1093 inp->sctp_ep.secret_key[secret][i] =
1094 sctp_select_initial_TSN(&inp->sctp_ep);
1096 SCTP_INP_WUNLOCK(inp);
1097 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net);
1101 case SCTP_TIMER_TYPE_PATHMTURAISE:
1102 sctp_pathmtu_timer(inp, stcb, net);
1105 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1106 if (sctp_shutdownack_timer(inp, stcb, net)) {
1107 /* no need to unlock on tcb its gone */
1110 #ifdef SCTP_AUDITING_ENABLED
1111 sctp_auditing(4, inp, stcb, net);
1113 sctp_chunk_output(inp, stcb, 7);
1115 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1116 sctp_abort_an_association(inp, stcb,
1117 SCTP_SHUTDOWN_GUARD_EXPIRES, NULL);
1118 /* no need to unlock on tcb its gone */
1122 case SCTP_TIMER_TYPE_STRRESET:
1123 if (sctp_strreset_timer(inp, stcb, net)) {
1124 /* no need to unlock on tcb its gone */
1127 sctp_chunk_output(inp, stcb, 9);
1130 case SCTP_TIMER_TYPE_ASCONF:
1131 if (sctp_asconf_timer(inp, stcb, net)) {
1132 /* no need to unlock on tcb its gone */
1135 #ifdef SCTP_AUDITING_ENABLED
1136 sctp_auditing(4, inp, stcb, net);
1138 sctp_chunk_output(inp, stcb, 8);
1141 case SCTP_TIMER_TYPE_AUTOCLOSE:
1142 sctp_autoclose_timer(inp, stcb, net);
1143 sctp_chunk_output(inp, stcb, 10);
1146 case SCTP_TIMER_TYPE_INPKILL:
1147 /* special case, take away our
1148 * increment since WE are the killer
1150 SCTP_INP_WLOCK(inp);
1151 SCTP_INP_DECR_REF(inp);
1152 SCTP_INP_WUNLOCK(inp);
1153 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
1154 sctp_inpcb_free(inp, 1);
1159 if (sctp_debug_on & SCTP_DEBUG_TIMER1) {
1160 kprintf("sctp_timeout_handler:unknown timer %d\n",
1163 #endif /* SCTP_DEBUG */
1166 #ifdef SCTP_AUDITING_ENABLED
1167 sctp_audit_log(0xF1, (u_int8_t)tmr->type);
1168 sctp_auditing(5, inp, stcb, net);
1172 * Now we need to clean up the control chunk chain if an
1173 * ECNE is on it. It must be marked as UNSENT again so next
1174 * call will continue to send it until such time that we get
1175 * a CWR, to remove it. It is, however, less likely that we
1176 * will find a ecn echo on the chain though.
1178 sctp_fix_ecn_echo(&stcb->asoc);
1181 SCTP_TCB_UNLOCK(stcb);
1184 SCTP_INP_WLOCK(inp);
1185 SCTP_INP_DECR_REF(inp);
1186 SCTP_INP_WUNLOCK(inp);
1191 if (sctp_debug_on & SCTP_DEBUG_TIMER1) {
1192 kprintf("Timer now complete (type %d)\n", typ);
1194 #endif /* SCTP_DEBUG */
1197 #if defined(__APPLE__)
1198 /* release BSD kernel funnel/mutex */
1199 thread_funnel_set(network_flock, FALSE);
1204 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1205 struct sctp_nets *net)
1208 struct sctp_timer *tmr;
1217 case SCTP_TIMER_TYPE_ITERATOR:
1219 struct sctp_iterator *it;
1220 it = (struct sctp_iterator *)inp;
1222 to_ticks = SCTP_ITERATOR_TICKS;
1225 case SCTP_TIMER_TYPE_SEND:
1226 /* Here we use the RTO timer */
1229 if ((stcb == NULL) || (net == NULL)) {
1232 tmr = &net->rxt_timer;
1233 if (net->RTO == 0) {
1234 rto_val = stcb->asoc.initial_rto;
1238 to_ticks = MSEC_TO_TICKS(rto_val);
1241 case SCTP_TIMER_TYPE_INIT:
1243 * Here we use the INIT timer default
1244 * usually about 1 minute.
1246 if ((stcb == NULL) || (net == NULL)) {
1249 tmr = &net->rxt_timer;
1250 if (net->RTO == 0) {
1251 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1253 to_ticks = MSEC_TO_TICKS(net->RTO);
1256 case SCTP_TIMER_TYPE_RECV:
1258 * Here we use the Delayed-Ack timer value from the inp
1259 * ususually about 200ms.
1264 tmr = &stcb->asoc.dack_timer;
1265 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV];
1267 case SCTP_TIMER_TYPE_SHUTDOWN:
1268 /* Here we use the RTO of the destination. */
1269 if ((stcb == NULL) || (net == NULL)) {
1273 if (net->RTO == 0) {
1274 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1276 to_ticks = MSEC_TO_TICKS(net->RTO);
1278 tmr = &net->rxt_timer;
1280 case SCTP_TIMER_TYPE_HEARTBEAT:
1282 * the net is used here so that we can add in the RTO.
1283 * Even though we use a different timer. We also add the
1284 * HB timer PLUS a random jitter.
1291 uint8_t this_random;
1292 int cnt_of_unconf=0;
1293 struct sctp_nets *lnet;
1295 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
1296 if (lnet->dest_state & SCTP_ADDR_UNCONFIRMED) {
1301 if (sctp_debug_on & SCTP_DEBUG_TIMER1) {
1302 kprintf("HB timer to start unconfirmed:%d hb_delay:%d\n",
1303 cnt_of_unconf, stcb->asoc.heart_beat_delay);
1306 if (stcb->asoc.hb_random_idx > 3) {
1307 rndval = sctp_select_initial_TSN(&inp->sctp_ep);
1308 memcpy(stcb->asoc.hb_random_values, &rndval,
1309 sizeof(stcb->asoc.hb_random_values));
1310 this_random = stcb->asoc.hb_random_values[0];
1311 stcb->asoc.hb_random_idx = 0;
1312 stcb->asoc.hb_ect_randombit = 0;
1314 this_random = stcb->asoc.hb_random_values[stcb->asoc.hb_random_idx];
1315 stcb->asoc.hb_random_idx++;
1316 stcb->asoc.hb_ect_randombit = 0;
1319 * this_random will be 0 - 256 ms
1322 if ((stcb->asoc.heart_beat_delay == 0) &&
1323 (cnt_of_unconf == 0)) {
1324 /* no HB on this inp after confirmations */
1328 struct sctp_nets *lnet;
1330 delay = stcb->asoc.heart_beat_delay;
1331 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
1332 if ((lnet->dest_state & SCTP_ADDR_UNCONFIRMED) &&
1333 ((lnet->dest_state & SCTP_ADDR_OUT_OF_SCOPE) == 0) &&
1334 (lnet->dest_state & SCTP_ADDR_REACHABLE)) {
1338 if (net->RTO == 0) {
1339 /* Never been checked */
1340 to_ticks = this_random + stcb->asoc.initial_rto + delay;
1342 /* set rto_val to the ms */
1343 to_ticks = delay + net->RTO + this_random;
1346 if (cnt_of_unconf) {
1347 to_ticks = this_random + stcb->asoc.initial_rto;
1349 to_ticks = stcb->asoc.heart_beat_delay + this_random + stcb->asoc.initial_rto;
1353 * Now we must convert the to_ticks that are now in
1359 if (sctp_debug_on & SCTP_DEBUG_TIMER1) {
1360 kprintf("Timer to expire in %d ticks\n", to_ticks);
1363 tmr = &stcb->asoc.hb_timer;
1366 case SCTP_TIMER_TYPE_COOKIE:
1368 * Here we can use the RTO timer from the network since
1369 * one RTT was compelete. If a retran happened then we will
1370 * be using the RTO initial value.
1372 if ((stcb == NULL) || (net == NULL)) {
1375 if (net->RTO == 0) {
1376 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1378 to_ticks = MSEC_TO_TICKS(net->RTO);
1380 tmr = &net->rxt_timer;
1382 case SCTP_TIMER_TYPE_NEWCOOKIE:
1384 * nothing needed but the endpoint here
1385 * ususually about 60 minutes.
1387 tmr = &inp->sctp_ep.signature_change;
1388 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
1390 case SCTP_TIMER_TYPE_INPKILL:
1392 * The inp is setup to die. We re-use the
1393 * signature_chage timer since that has
1394 * stopped and we are in the GONE state.
1396 tmr = &inp->sctp_ep.signature_change;
1397 to_ticks = (SCTP_INP_KILL_TIMEOUT * hz) / 1000;
1399 case SCTP_TIMER_TYPE_PATHMTURAISE:
1401 * Here we use the value found in the EP for PMTU
1402 * ususually about 10 minutes.
1410 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
1411 tmr = &net->pmtu_timer;
1413 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1414 /* Here we use the RTO of the destination */
1415 if ((stcb == NULL) || (net == NULL)) {
1418 if (net->RTO == 0) {
1419 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1421 to_ticks = MSEC_TO_TICKS(net->RTO);
1423 tmr = &net->rxt_timer;
1425 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1427 * Here we use the endpoints shutdown guard timer
1428 * usually about 3 minutes.
1433 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
1434 tmr = &stcb->asoc.shut_guard_timer;
1436 case SCTP_TIMER_TYPE_STRRESET:
1438 * Here the timer comes from the inp
1439 * but its value is from the RTO.
1441 if ((stcb == NULL) || (net == NULL)) {
1444 if (net->RTO == 0) {
1445 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1447 to_ticks = MSEC_TO_TICKS(net->RTO);
1449 tmr = &stcb->asoc.strreset_timer;
1452 case SCTP_TIMER_TYPE_ASCONF:
1454 * Here the timer comes from the inp
1455 * but its value is from the RTO.
1457 if ((stcb == NULL) || (net == NULL)) {
1460 if (net->RTO == 0) {
1461 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1463 to_ticks = MSEC_TO_TICKS(net->RTO);
1465 tmr = &stcb->asoc.asconf_timer;
1467 case SCTP_TIMER_TYPE_AUTOCLOSE:
1471 if (stcb->asoc.sctp_autoclose_ticks == 0) {
1472 /* Really an error since stcb is NOT set to autoclose */
1475 to_ticks = stcb->asoc.sctp_autoclose_ticks;
1476 tmr = &stcb->asoc.autoclose_timer;
1480 if (sctp_debug_on & SCTP_DEBUG_TIMER1) {
1481 kprintf("sctp_timer_start:Unknown timer type %d\n",
1484 #endif /* SCTP_DEBUG */
1488 if ((to_ticks <= 0) || (tmr == NULL)) {
1490 if (sctp_debug_on & SCTP_DEBUG_TIMER1) {
1491 kprintf("sctp_timer_start:%d:software error to_ticks:%d tmr:%p not set ??\n",
1492 t_type, to_ticks, tmr);
1494 #endif /* SCTP_DEBUG */
1497 if (callout_pending(&tmr->timer)) {
1499 * we do NOT allow you to have it already running.
1500 * if it is we leave the current one up unchanged
1504 /* At this point we can proceed */
1505 if (t_type == SCTP_TIMER_TYPE_SEND) {
1506 stcb->asoc.num_send_timers_up++;
1509 tmr->ep = (void *)inp;
1510 tmr->tcb = (void *)stcb;
1511 tmr->net = (void *)net;
1512 callout_reset(&tmr->timer, to_ticks, sctp_timeout_handler, tmr);
1517 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1518 struct sctp_nets *net)
1520 struct sctp_timer *tmr;
1527 case SCTP_TIMER_TYPE_ITERATOR:
1529 struct sctp_iterator *it;
1530 it = (struct sctp_iterator *)inp;
1534 case SCTP_TIMER_TYPE_SEND:
1535 if ((stcb == NULL) || (net == NULL)) {
1538 tmr = &net->rxt_timer;
1540 case SCTP_TIMER_TYPE_INIT:
1541 if ((stcb == NULL) || (net == NULL)) {
1544 tmr = &net->rxt_timer;
1546 case SCTP_TIMER_TYPE_RECV:
1550 tmr = &stcb->asoc.dack_timer;
1552 case SCTP_TIMER_TYPE_SHUTDOWN:
1553 if ((stcb == NULL) || (net == NULL)) {
1556 tmr = &net->rxt_timer;
1558 case SCTP_TIMER_TYPE_HEARTBEAT:
1562 tmr = &stcb->asoc.hb_timer;
1564 case SCTP_TIMER_TYPE_COOKIE:
1565 if ((stcb == NULL) || (net == NULL)) {
1568 tmr = &net->rxt_timer;
1570 case SCTP_TIMER_TYPE_NEWCOOKIE:
1571 /* nothing needed but the endpoint here */
1572 tmr = &inp->sctp_ep.signature_change;
1573 /* We re-use the newcookie timer for
1574 * the INP kill timer. We must assure
1575 * that we do not kill it by accident.
1578 case SCTP_TIMER_TYPE_INPKILL:
1580 * The inp is setup to die. We re-use the
1581 * signature_chage timer since that has
1582 * stopped and we are in the GONE state.
1584 tmr = &inp->sctp_ep.signature_change;
1586 case SCTP_TIMER_TYPE_PATHMTURAISE:
1593 tmr = &net->pmtu_timer;
1595 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1596 if ((stcb == NULL) || (net == NULL)) {
1599 tmr = &net->rxt_timer;
1601 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1605 tmr = &stcb->asoc.shut_guard_timer;
1607 case SCTP_TIMER_TYPE_STRRESET:
1611 tmr = &stcb->asoc.strreset_timer;
1613 case SCTP_TIMER_TYPE_ASCONF:
1617 tmr = &stcb->asoc.asconf_timer;
1619 case SCTP_TIMER_TYPE_AUTOCLOSE:
1623 tmr = &stcb->asoc.autoclose_timer;
1627 if (sctp_debug_on & SCTP_DEBUG_TIMER1) {
1628 kprintf("sctp_timer_stop:Unknown timer type %d\n",
1631 #endif /* SCTP_DEBUG */
1637 if ((tmr->type != t_type) && tmr->type) {
1639 * Ok we have a timer that is under joint use. Cookie timer
1640 * per chance with the SEND timer. We therefore are NOT
1641 * running the timer that the caller wants stopped. So just
1646 if (t_type == SCTP_TIMER_TYPE_SEND) {
1647 stcb->asoc.num_send_timers_up--;
1648 if (stcb->asoc.num_send_timers_up < 0) {
1649 stcb->asoc.num_send_timers_up = 0;
1652 callout_stop(&tmr->timer);
1656 #ifdef SCTP_USE_ADLER32
1658 update_adler32(uint32_t adler, uint8_t *buf, int32_t len)
1660 u_int32_t s1 = adler & 0xffff;
1661 u_int32_t s2 = (adler >> 16) & 0xffff;
1664 for (n = 0; n < len; n++, buf++) {
1665 /* s1 = (s1 + buf[n]) % BASE */
1669 * now if we need to, we do a mod by subtracting. It seems
1670 * a bit faster since I really will only ever do one subtract
1671 * at the MOST, since buf[n] is a max of 255.
1673 if (s1 >= SCTP_ADLER32_BASE) {
1674 s1 -= SCTP_ADLER32_BASE;
1676 /* s2 = (s2 + s1) % BASE */
1680 * again, it is more efficent (it seems) to subtract since
1681 * the most s2 will ever be is (BASE-1 + BASE-1) in the worse
1682 * case. This would then be (2 * BASE) - 2, which will still
1683 * only do one subtract. On Intel this is much better to do
1684 * this way and avoid the divide. Have not -pg'd on sparc.
1686 if (s2 >= SCTP_ADLER32_BASE) {
1687 s2 -= SCTP_ADLER32_BASE;
1690 /* Return the adler32 of the bytes buf[0..len-1] */
1691 return ((s2 << 16) + s1);
1698 sctp_calculate_len(struct mbuf *m)
1710 #if defined(SCTP_WITH_NO_CSUM)
1713 sctp_calculate_sum(struct mbuf *m, int32_t *pktlen, uint32_t offset)
1716 * given a mbuf chain with a packetheader offset by 'offset'
1717 * pointing at a sctphdr (with csum set to 0) go through
1718 * the chain of m_next's and calculate the SCTP checksum.
1719 * This is currently Adler32 but will change to CRC32x
1720 * soon. Also has a side bonus calculate the total length
1721 * of the mbuf chain.
1722 * Note: if offset is greater than the total mbuf length,
1723 * checksum=1, pktlen=0 is returned (ie. no real error code)
1727 *pktlen = sctp_calculate_len(m);
1731 #elif defined(SCTP_USE_INCHKSUM)
1733 #include <machine/in_cksum.h>
1736 sctp_calculate_sum(struct mbuf *m, int32_t *pktlen, uint32_t offset)
1739 * given a mbuf chain with a packetheader offset by 'offset'
1740 * pointing at a sctphdr (with csum set to 0) go through
1741 * the chain of m_next's and calculate the SCTP checksum.
1742 * This is currently Adler32 but will change to CRC32x
1743 * soon. Also has a side bonus calculate the total length
1744 * of the mbuf chain.
1745 * Note: if offset is greater than the total mbuf length,
1746 * checksum=1, pktlen=0 is returned (ie. no real error code)
1750 uint32_t the_sum, retsum;
1757 the_sum = (uint32_t)(in_cksum_skip(m, tlen, offset));
1759 *pktlen = (tlen-offset);
1760 retsum = htons(the_sum);
1767 sctp_calculate_sum(struct mbuf *m, int32_t *pktlen, uint32_t offset)
1770 * given a mbuf chain with a packetheader offset by 'offset'
1771 * pointing at a sctphdr (with csum set to 0) go through
1772 * the chain of m_next's and calculate the SCTP checksum.
1773 * This is currently Adler32 but will change to CRC32x
1774 * soon. Also has a side bonus calculate the total length
1775 * of the mbuf chain.
1776 * Note: if offset is greater than the total mbuf length,
1777 * checksum=1, pktlen=0 is returned (ie. no real error code)
1780 #ifdef SCTP_USE_ADLER32
1783 uint32_t base = 0xffffffff;
1784 #endif /* SCTP_USE_ADLER32 */
1787 /* find the correct mbuf and offset into mbuf */
1788 while ((at != NULL) && (offset > (uint32_t)at->m_len)) {
1789 offset -= at->m_len; /* update remaining offset left */
1793 while (at != NULL) {
1794 #ifdef SCTP_USE_ADLER32
1795 base = update_adler32(base, at->m_data + offset,
1796 at->m_len - offset);
1798 base = update_crc32(base, at->m_data + offset,
1799 at->m_len - offset);
1800 #endif /* SCTP_USE_ADLER32 */
1801 tlen += at->m_len - offset;
1802 /* we only offset once into the first mbuf */
1808 if (pktlen != NULL) {
1811 #ifdef SCTP_USE_ADLER32
1816 base = sctp_csum_finalize(base);
1825 sctp_mtu_size_reset(struct sctp_inpcb *inp,
1826 struct sctp_association *asoc, u_long mtu)
1829 * Reset the P-MTU size on this association, this involves changing
1830 * the asoc MTU, going through ANY chunk+overhead larger than mtu
1831 * to allow the DF flag to be cleared.
1833 struct sctp_tmit_chunk *chk;
1834 struct sctp_stream_out *strm;
1835 unsigned int eff_mtu, ovh;
1836 asoc->smallest_mtu = mtu;
1837 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1838 ovh = SCTP_MIN_OVERHEAD;
1840 ovh = SCTP_MIN_V4_OVERHEAD;
1842 eff_mtu = mtu - ovh;
1843 /* Now mark any chunks that need to let IP fragment */
1844 TAILQ_FOREACH(strm, &asoc->out_wheel, next_spoke) {
1845 TAILQ_FOREACH(chk, &strm->outqueue, sctp_next) {
1846 if (chk->send_size > eff_mtu) {
1847 chk->flags &= SCTP_DONT_FRAGMENT;
1848 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
1852 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
1853 if (chk->send_size > eff_mtu) {
1854 chk->flags &= SCTP_DONT_FRAGMENT;
1855 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
1858 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
1859 if (chk->send_size > eff_mtu) {
1860 chk->flags &= SCTP_DONT_FRAGMENT;
1861 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
1868 * given an association and starting time of the current RTT period
1869 * return RTO in number of usecs
1870 * net should point to the current network
1873 sctp_calculate_rto(struct sctp_tcb *stcb,
1874 struct sctp_association *asoc,
1875 struct sctp_nets *net,
1876 struct timeval *old)
1879 * given an association and the starting time of the current RTT
1880 * period (in value1/value2) return RTO in number of usecs.
1883 unsigned int new_rto = 0;
1884 int first_measure = 0;
1887 /************************/
1888 /* 1. calculate new RTT */
1889 /************************/
1890 /* get the current time */
1891 SCTP_GETTIME_TIMEVAL(&now);
1892 /* compute the RTT value */
1893 if ((u_long)now.tv_sec > (u_long)old->tv_sec) {
1894 calc_time = ((u_long)now.tv_sec - (u_long)old->tv_sec) * 1000;
1895 if ((u_long)now.tv_usec > (u_long)old->tv_usec) {
1896 calc_time += (((u_long)now.tv_usec -
1897 (u_long)old->tv_usec)/1000);
1898 } else if ((u_long)now.tv_usec < (u_long)old->tv_usec) {
1899 /* Borrow 1,000ms from current calculation */
1901 /* Add in the slop over */
1902 calc_time += ((int)now.tv_usec/1000);
1903 /* Add in the pre-second ms's */
1904 calc_time += (((int)1000000 - (int)old->tv_usec)/1000);
1906 } else if ((u_long)now.tv_sec == (u_long)old->tv_sec) {
1907 if ((u_long)now.tv_usec > (u_long)old->tv_usec) {
1908 calc_time = ((u_long)now.tv_usec -
1909 (u_long)old->tv_usec)/1000;
1910 } else if ((u_long)now.tv_usec < (u_long)old->tv_usec) {
1911 /* impossible .. garbage in nothing out */
1912 return (((net->lastsa >> 2) + net->lastsv) >> 1);
1914 /* impossible .. garbage in nothing out */
1915 return (((net->lastsa >> 2) + net->lastsv) >> 1);
1918 /* Clock wrapped? */
1919 return (((net->lastsa >> 2) + net->lastsv) >> 1);
1921 /***************************/
1922 /* 2. update RTTVAR & SRTT */
1923 /***************************/
1925 /* if (net->lastsv || net->lastsa) {*/
1926 /* per Section 5.3.1 C3 in SCTP */
1927 /* net->lastsv = (int) *//* RTTVAR */
1928 /* (((double)(1.0 - 0.25) * (double)net->lastsv) +
1929 (double)(0.25 * (double)abs(net->lastsa - calc_time)));
1930 net->lastsa = (int) */ /* SRTT */
1931 /*(((double)(1.0 - 0.125) * (double)net->lastsa) +
1932 (double)(0.125 * (double)calc_time));
1934 *//* the first RTT calculation, per C2 Section 5.3.1 */
1935 /* net->lastsa = calc_time; *//* SRTT */
1936 /* net->lastsv = calc_time / 2; *//* RTTVAR */
1938 /* if RTTVAR goes to 0 you set to clock grainularity */
1939 /* if (net->lastsv == 0) {
1940 net->lastsv = SCTP_CLOCK_GRANULARITY;
1942 new_rto = net->lastsa + 4 * net->lastsv;
1945 /* this is Van Jacobson's integer version */
1947 calc_time -= (net->lastsa >> 3);
1948 net->lastsa += calc_time;
1949 if (calc_time < 0) {
1950 calc_time = -calc_time;
1952 calc_time -= (net->lastsv >> 2);
1953 net->lastsv += calc_time;
1954 if (net->lastsv == 0) {
1955 net->lastsv = SCTP_CLOCK_GRANULARITY;
1958 /* First RTO measurment */
1959 net->lastsa = calc_time;
1960 net->lastsv = calc_time >> 1;
1963 new_rto = ((net->lastsa >> 2) + net->lastsv) >> 1;
1964 if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
1965 (stcb->asoc.sat_network_lockout == 0)) {
1966 stcb->asoc.sat_network = 1;
1967 } else if ((!first_measure) && stcb->asoc.sat_network) {
1968 stcb->asoc.sat_network = 0;
1969 stcb->asoc.sat_network_lockout = 1;
1971 /* bound it, per C6/C7 in Section 5.3.1 */
1972 if (new_rto < stcb->asoc.minrto) {
1973 new_rto = stcb->asoc.minrto;
1975 if (new_rto > stcb->asoc.maxrto) {
1976 new_rto = stcb->asoc.maxrto;
1978 /* we are now returning the RTT Smoothed */
1979 return ((u_int32_t)new_rto);
1984 * return a pointer to a contiguous piece of data from the given
1985 * mbuf chain starting at 'off' for 'len' bytes. If the desired
1986 * piece spans more than one mbuf, a copy is made at 'ptr'.
1987 * caller must ensure that the buffer size is >= 'len'
1988 * returns NULL if there there isn't 'len' bytes in the chain.
1991 sctp_m_getptr(struct mbuf *m, int off, int len, u_int8_t *in_ptr)
1996 if ((off < 0) || (len <= 0))
1999 /* find the desired start location */
2000 while ((m != NULL) && (off > 0)) {
2009 /* is the current mbuf large enough (eg. contiguous)? */
2010 if ((m->m_len - off) >= len) {
2011 return (mtod(m, caddr_t) + off);
2013 /* else, it spans more than one mbuf, so save a temp copy... */
2014 while ((m != NULL) && (len > 0)) {
2015 count = min(m->m_len - off, len);
2016 bcopy(mtod(m, caddr_t) + off, ptr, count);
2022 if ((m == NULL) && (len > 0))
2025 return ((caddr_t)in_ptr);
2030 struct sctp_paramhdr *
2031 sctp_get_next_param(struct mbuf *m,
2033 struct sctp_paramhdr *pull,
2036 /* This just provides a typed signature to Peter's Pull routine */
2037 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
2043 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
2046 * add padlen bytes of 0 filled padding to the end of the mbuf.
2047 * If padlen is > 3 this routine will fail.
2054 if (M_TRAILINGSPACE(m)) {
2057 * We hope the majority of the time we hit here :)
2059 dp = (u_int8_t *)(mtod(m, caddr_t) + m->m_len);
2062 /* Hard way we must grow the mbuf */
2064 MGET(tmp, MB_DONTWAIT, MT_DATA);
2066 /* Out of space GAK! we are in big trouble. */
2069 /* setup and insert in middle */
2070 tmp->m_next = m->m_next;
2071 tmp->m_len = padlen;
2073 dp = mtod(tmp, u_int8_t *);
2075 /* zero out the pad */
2076 for (i= 0; i < padlen; i++) {
2084 sctp_pad_lastmbuf(struct mbuf *m, int padval)
2086 /* find the last mbuf in chain and pad it */
2090 if (m_at->m_next == NULL) {
2091 return (sctp_add_pad_tombuf(m_at, padval));
2093 m_at = m_at->m_next;
2099 sctp_notify_assoc_change(u_int32_t event, struct sctp_tcb *stcb,
2102 struct mbuf *m_notify;
2103 struct sctp_assoc_change *sac;
2104 struct sockaddr *to;
2105 struct sockaddr_in6 sin6, lsa6;
2108 * First if we are are going down dump everything we
2109 * can to the socket rcv queue.
2111 if ((event == SCTP_SHUTDOWN_COMP) || (event == SCTP_COMM_LOST)) {
2112 sctp_deliver_data(stcb, &stcb->asoc, NULL, 0);
2116 * For TCP model AND UDP connected sockets we will send
2117 * an error up when an ABORT comes in.
2119 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2120 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2121 (event == SCTP_COMM_LOST)) {
2122 stcb->sctp_socket->so_error = ECONNRESET;
2123 /* Wake ANY sleepers */
2124 sowwakeup(stcb->sctp_socket);
2125 sorwakeup(stcb->sctp_socket);
2128 if ((event == SCTP_COMM_UP) &&
2129 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
2130 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) {
2131 soisconnected(stcb->sctp_socket);
2134 if (!(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
2135 /* event not enabled */
2138 MGETHDR(m_notify, MB_DONTWAIT, MT_DATA);
2139 if (m_notify == NULL)
2142 m_notify->m_len = 0;
2144 sac = mtod(m_notify, struct sctp_assoc_change *);
2145 sac->sac_type = SCTP_ASSOC_CHANGE;
2147 sac->sac_length = sizeof(struct sctp_assoc_change);
2148 sac->sac_state = event;
2149 sac->sac_error = error;
2150 /* XXX verify these stream counts */
2151 sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
2152 sac->sac_inbound_streams = stcb->asoc.streamincnt;
2153 sac->sac_assoc_id = sctp_get_associd(stcb);
2155 m_notify->m_flags |= M_EOR | M_NOTIFICATION;
2156 m_notify->m_pkthdr.len = sizeof(struct sctp_assoc_change);
2157 m_notify->m_pkthdr.rcvif = 0;
2158 m_notify->m_len = sizeof(struct sctp_assoc_change);
2159 m_notify->m_next = NULL;
2161 /* append to socket */
2162 to = (struct sockaddr *)&stcb->asoc.primary_destination->ro._l_addr;
2163 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) &&
2164 to->sa_family == AF_INET) {
2165 struct sockaddr_in *sin;
2167 sin = (struct sockaddr_in *)to;
2168 bzero(&sin6, sizeof(sin6));
2169 sin6.sin6_family = AF_INET6;
2170 sin6.sin6_len = sizeof(struct sockaddr_in6);
2171 sin6.sin6_addr.s6_addr16[2] = 0xffff;
2172 bcopy(&sin->sin_addr, &sin6.sin6_addr.s6_addr16[3],
2173 sizeof(sin6.sin6_addr.s6_addr16[3]));
2174 sin6.sin6_port = sin->sin_port;
2175 to = (struct sockaddr *)&sin6;
2177 /* check and strip embedded scope junk */
2178 to = (struct sockaddr *)sctp_recover_scope((struct sockaddr_in6 *)to,
2181 * We need to always notify comm changes.
2182 * if (sctp_sbspace(&stcb->sctp_socket->so_rcv) < m_notify->m_len) {
2183 * sctp_m_freem(m_notify);
2187 SCTP_TCB_UNLOCK(stcb);
2188 SCTP_INP_WLOCK(stcb->sctp_ep);
2189 SCTP_TCB_LOCK(stcb);
2190 lwkt_gettoken(&stcb->sctp_socket->so_rcv.ssb_token);
2191 if (!sctp_sbappendaddr_nocheck(&stcb->sctp_socket->so_rcv,
2192 to, m_notify, NULL, stcb->asoc.my_vtag, stcb->sctp_ep)) {
2193 /* not enough room */
2194 sctp_m_freem(m_notify);
2195 SCTP_INP_WUNLOCK(stcb->sctp_ep);
2196 lwkt_reltoken(&stcb->sctp_socket->so_rcv.ssb_token);
2199 lwkt_reltoken(&stcb->sctp_socket->so_rcv.ssb_token);
2200 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) &&
2201 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)){
2202 if (sctp_add_to_socket_q(stcb->sctp_ep, stcb)) {
2203 stcb->asoc.my_rwnd_control_len += sizeof(struct mbuf);
2206 stcb->asoc.my_rwnd_control_len += sizeof(struct mbuf);
2208 SCTP_INP_WUNLOCK(stcb->sctp_ep);
2209 /* Wake up any sleeper */
2210 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
2211 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
2215 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
2216 struct sockaddr *sa, uint32_t error)
2218 struct mbuf *m_notify;
2219 struct sctp_paddr_change *spc;
2220 struct sockaddr *to;
2221 struct sockaddr_in6 sin6, lsa6;
2223 if (!(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_RECVPADDREVNT))
2224 /* event not enabled */
2227 MGETHDR(m_notify, MB_DONTWAIT, MT_DATA);
2228 if (m_notify == NULL)
2230 m_notify->m_len = 0;
2232 MCLGET(m_notify, MB_DONTWAIT);
2233 if ((m_notify->m_flags & M_EXT) != M_EXT) {
2234 sctp_m_freem(m_notify);
2238 spc = mtod(m_notify, struct sctp_paddr_change *);
2239 spc->spc_type = SCTP_PEER_ADDR_CHANGE;
2241 spc->spc_length = sizeof(struct sctp_paddr_change);
2242 if (sa->sa_family == AF_INET) {
2243 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2245 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
2247 spc->spc_state = state;
2248 spc->spc_error = error;
2249 spc->spc_assoc_id = sctp_get_associd(stcb);
2251 m_notify->m_flags |= M_EOR | M_NOTIFICATION;
2252 m_notify->m_pkthdr.len = sizeof(struct sctp_paddr_change);
2253 m_notify->m_pkthdr.rcvif = 0;
2254 m_notify->m_len = sizeof(struct sctp_paddr_change);
2255 m_notify->m_next = NULL;
2257 to = (struct sockaddr *)
2258 &stcb->asoc.primary_destination->ro._l_addr;
2259 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) &&
2260 to->sa_family == AF_INET) {
2261 struct sockaddr_in *sin;
2263 sin = (struct sockaddr_in *)to;
2264 bzero(&sin6, sizeof(sin6));
2265 sin6.sin6_family = AF_INET6;
2266 sin6.sin6_len = sizeof(struct sockaddr_in6);
2267 sin6.sin6_addr.s6_addr16[2] = 0xffff;
2268 bcopy(&sin->sin_addr, &sin6.sin6_addr.s6_addr16[3],
2269 sizeof(sin6.sin6_addr.s6_addr16[3]));
2270 sin6.sin6_port = sin->sin_port;
2271 to = (struct sockaddr *)&sin6;
2273 /* check and strip embedded scope junk */
2274 to = (struct sockaddr *)sctp_recover_scope((struct sockaddr_in6 *)to,
2277 if (sctp_sbspace(&stcb->sctp_socket->so_rcv) < m_notify->m_len) {
2278 sctp_m_freem(m_notify);
2281 /* append to socket */
2282 SCTP_TCB_UNLOCK(stcb);
2283 SCTP_INP_WLOCK(stcb->sctp_ep);
2284 SCTP_TCB_LOCK(stcb);
2285 lwkt_gettoken(&stcb->sctp_socket->so_rcv.ssb_token);
2286 if (!sctp_sbappendaddr_nocheck(&stcb->sctp_socket->so_rcv, to,
2287 m_notify, NULL, stcb->asoc.my_vtag, stcb->sctp_ep)) {
2288 /* not enough room */
2289 sctp_m_freem(m_notify);
2290 SCTP_INP_WUNLOCK(stcb->sctp_ep);
2291 lwkt_reltoken(&stcb->sctp_socket->so_rcv.ssb_token);
2294 lwkt_reltoken(&stcb->sctp_socket->so_rcv.ssb_token);
2295 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) &&
2296 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)){
2297 if (sctp_add_to_socket_q(stcb->sctp_ep, stcb)) {
2298 stcb->asoc.my_rwnd_control_len += sizeof(struct mbuf);
2301 stcb->asoc.my_rwnd_control_len += sizeof(struct mbuf);
2303 SCTP_INP_WUNLOCK(stcb->sctp_ep);
2304 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
2309 sctp_notify_send_failed(struct sctp_tcb *stcb, u_int32_t error,
2310 struct sctp_tmit_chunk *chk)
2312 struct mbuf *m_notify;
2313 struct sctp_send_failed *ssf;
2314 struct sockaddr_in6 sin6, lsa6;
2315 struct sockaddr *to;
2318 if (!(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_RECVSENDFAILEVNT))
2319 /* event not enabled */
2322 length = sizeof(struct sctp_send_failed) + chk->send_size;
2323 MGETHDR(m_notify, MB_DONTWAIT, MT_DATA);
2324 if (m_notify == NULL)
2327 m_notify->m_len = 0;
2328 ssf = mtod(m_notify, struct sctp_send_failed *);
2329 ssf->ssf_type = SCTP_SEND_FAILED;
2330 if (error == SCTP_NOTIFY_DATAGRAM_UNSENT)
2331 ssf->ssf_flags = SCTP_DATA_UNSENT;
2333 ssf->ssf_flags = SCTP_DATA_SENT;
2334 ssf->ssf_length = length;
2335 ssf->ssf_error = error;
2336 /* not exactly what the user sent in, but should be close :) */
2337 ssf->ssf_info.sinfo_stream = chk->rec.data.stream_number;
2338 ssf->ssf_info.sinfo_ssn = chk->rec.data.stream_seq;
2339 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
2340 ssf->ssf_info.sinfo_ppid = chk->rec.data.payloadtype;
2341 ssf->ssf_info.sinfo_context = chk->rec.data.context;
2342 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
2343 ssf->ssf_assoc_id = sctp_get_associd(stcb);
2344 m_notify->m_next = chk->data;
2345 if (m_notify->m_next == NULL)
2346 m_notify->m_flags |= M_EOR | M_NOTIFICATION;
2349 m_notify->m_flags |= M_NOTIFICATION;
2351 while (m->m_next != NULL)
2353 m->m_flags |= M_EOR;
2355 m_notify->m_pkthdr.len = length;
2356 m_notify->m_pkthdr.rcvif = 0;
2357 m_notify->m_len = sizeof(struct sctp_send_failed);
2359 /* Steal off the mbuf */
2361 to = (struct sockaddr *)&stcb->asoc.primary_destination->ro._l_addr;
2362 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) &&
2363 to->sa_family == AF_INET) {
2364 struct sockaddr_in *sin;
2366 sin = (struct sockaddr_in *)to;
2367 bzero(&sin6, sizeof(sin6));
2368 sin6.sin6_family = AF_INET6;
2369 sin6.sin6_len = sizeof(struct sockaddr_in6);
2370 sin6.sin6_addr.s6_addr16[2] = 0xffff;
2371 bcopy(&sin->sin_addr, &sin6.sin6_addr.s6_addr16[3],
2372 sizeof(sin6.sin6_addr.s6_addr16[3]));
2373 sin6.sin6_port = sin->sin_port;
2374 to = (struct sockaddr *)&sin6;
2376 /* check and strip embedded scope junk */
2377 to = (struct sockaddr *)sctp_recover_scope((struct sockaddr_in6 *)to,
2380 if (sctp_sbspace(&stcb->sctp_socket->so_rcv) < m_notify->m_len) {
2381 sctp_m_freem(m_notify);
2385 /* append to socket */
2386 SCTP_TCB_UNLOCK(stcb);
2387 SCTP_INP_WLOCK(stcb->sctp_ep);
2388 SCTP_TCB_LOCK(stcb);
2389 lwkt_gettoken(&stcb->sctp_socket->so_rcv.ssb_token);
2390 if (!sctp_sbappendaddr_nocheck(&stcb->sctp_socket->so_rcv, to,
2391 m_notify, NULL, stcb->asoc.my_vtag, stcb->sctp_ep)) {
2392 /* not enough room */
2393 sctp_m_freem(m_notify);
2394 lwkt_reltoken(&stcb->sctp_socket->so_rcv.ssb_token);
2395 SCTP_INP_WUNLOCK(stcb->sctp_ep);
2398 lwkt_reltoken(&stcb->sctp_socket->so_rcv.ssb_token);
2399 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) &&
2400 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)){
2401 if (sctp_add_to_socket_q(stcb->sctp_ep, stcb)) {
2402 stcb->asoc.my_rwnd_control_len += sizeof(struct mbuf);
2405 stcb->asoc.my_rwnd_control_len += sizeof(struct mbuf);
2407 SCTP_INP_WUNLOCK(stcb->sctp_ep);
2408 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
2412 sctp_notify_adaption_layer(struct sctp_tcb *stcb,
2415 struct mbuf *m_notify;
2416 struct sctp_adaption_event *sai;
2417 struct sockaddr_in6 sin6, lsa6;
2418 struct sockaddr *to;
2420 if (!(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_ADAPTIONEVNT))
2421 /* event not enabled */
2424 MGETHDR(m_notify, MB_DONTWAIT, MT_DATA);
2425 if (m_notify == NULL)
2428 m_notify->m_len = 0;
2429 sai = mtod(m_notify, struct sctp_adaption_event *);
2430 sai->sai_type = SCTP_ADAPTION_INDICATION;
2432 sai->sai_length = sizeof(struct sctp_adaption_event);
2433 sai->sai_adaption_ind = error;
2434 sai->sai_assoc_id = sctp_get_associd(stcb);
2436 m_notify->m_flags |= M_EOR | M_NOTIFICATION;
2437 m_notify->m_pkthdr.len = sizeof(struct sctp_adaption_event);
2438 m_notify->m_pkthdr.rcvif = 0;
2439 m_notify->m_len = sizeof(struct sctp_adaption_event);
2440 m_notify->m_next = NULL;
2442 to = (struct sockaddr *)&stcb->asoc.primary_destination->ro._l_addr;
2443 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) &&
2444 (to->sa_family == AF_INET)) {
2445 struct sockaddr_in *sin;
2447 sin = (struct sockaddr_in *)to;
2448 bzero(&sin6, sizeof(sin6));
2449 sin6.sin6_family = AF_INET6;
2450 sin6.sin6_len = sizeof(struct sockaddr_in6);
2451 sin6.sin6_addr.s6_addr16[2] = 0xffff;
2452 bcopy(&sin->sin_addr, &sin6.sin6_addr.s6_addr16[3],
2453 sizeof(sin6.sin6_addr.s6_addr16[3]));
2454 sin6.sin6_port = sin->sin_port;
2455 to = (struct sockaddr *)&sin6;
2457 /* check and strip embedded scope junk */
2458 to = (struct sockaddr *)sctp_recover_scope((struct sockaddr_in6 *)to,
2460 if (sctp_sbspace(&stcb->sctp_socket->so_rcv) < m_notify->m_len) {
2461 sctp_m_freem(m_notify);
2464 /* append to socket */
2465 SCTP_TCB_UNLOCK(stcb);
2466 SCTP_INP_WLOCK(stcb->sctp_ep);
2467 SCTP_TCB_LOCK(stcb);
2468 lwkt_gettoken(&stcb->sctp_socket->so_rcv.ssb_token);
2469 if (!sctp_sbappendaddr_nocheck(&stcb->sctp_socket->so_rcv, to,
2470 m_notify, NULL, stcb->asoc.my_vtag, stcb->sctp_ep)) {
2471 /* not enough room */
2472 sctp_m_freem(m_notify);
2473 lwkt_reltoken(&stcb->sctp_socket->so_rcv.ssb_token);
2474 SCTP_INP_WUNLOCK(stcb->sctp_ep);
2477 lwkt_reltoken(&stcb->sctp_socket->so_rcv.ssb_token);
2478 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) &&
2479 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)){
2480 if (sctp_add_to_socket_q(stcb->sctp_ep, stcb)) {
2481 stcb->asoc.my_rwnd_control_len += sizeof(struct mbuf);
2484 stcb->asoc.my_rwnd_control_len += sizeof(struct mbuf);
2486 SCTP_INP_WUNLOCK(stcb->sctp_ep);
2487 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
2491 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb,
2494 struct mbuf *m_notify;
2495 struct sctp_pdapi_event *pdapi;
2496 struct sockaddr_in6 sin6, lsa6;
2497 struct sockaddr *to;
2499 if (!(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_PDAPIEVNT))
2500 /* event not enabled */
2503 MGETHDR(m_notify, MB_DONTWAIT, MT_DATA);
2504 if (m_notify == NULL)
2507 m_notify->m_len = 0;
2508 pdapi = mtod(m_notify, struct sctp_pdapi_event *);
2509 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
2510 pdapi->pdapi_flags = 0;
2511 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
2512 pdapi->pdapi_indication = error;
2513 pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
2515 m_notify->m_flags |= M_EOR | M_NOTIFICATION;
2516 m_notify->m_pkthdr.len = sizeof(struct sctp_pdapi_event);
2517 m_notify->m_pkthdr.rcvif = 0;
2518 m_notify->m_len = sizeof(struct sctp_pdapi_event);
2519 m_notify->m_next = NULL;
2521 to = (struct sockaddr *)&stcb->asoc.primary_destination->ro._l_addr;
2522 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) &&
2523 (to->sa_family == AF_INET)) {
2524 struct sockaddr_in *sin;
2526 sin = (struct sockaddr_in *)to;
2527 bzero(&sin6, sizeof(sin6));
2528 sin6.sin6_family = AF_INET6;
2529 sin6.sin6_len = sizeof(struct sockaddr_in6);
2530 sin6.sin6_addr.s6_addr16[2] = 0xffff;
2531 bcopy(&sin->sin_addr, &sin6.sin6_addr.s6_addr16[3],
2532 sizeof(sin6.sin6_addr.s6_addr16[3]));
2533 sin6.sin6_port = sin->sin_port;
2534 to = (struct sockaddr *)&sin6;
2536 /* check and strip embedded scope junk */
2537 to = (struct sockaddr *)sctp_recover_scope((struct sockaddr_in6 *)to,
2539 if (sctp_sbspace(&stcb->sctp_socket->so_rcv) < m_notify->m_len) {
2540 sctp_m_freem(m_notify);
2543 /* append to socket */
2544 SCTP_TCB_UNLOCK(stcb);
2545 SCTP_INP_WLOCK(stcb->sctp_ep);
2546 SCTP_TCB_LOCK(stcb);
2547 lwkt_gettoken(&stcb->sctp_socket->so_rcv.ssb_token);
2548 if (!sctp_sbappendaddr_nocheck(&stcb->sctp_socket->so_rcv, to,
2549 m_notify, NULL, stcb->asoc.my_vtag, stcb->sctp_ep)) {
2550 /* not enough room */
2551 sctp_m_freem(m_notify);
2552 lwkt_reltoken(&stcb->sctp_socket->so_rcv.ssb_token);
2553 SCTP_INP_WUNLOCK(stcb->sctp_ep);
2556 lwkt_reltoken(&stcb->sctp_socket->so_rcv.ssb_token);
2557 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) &&
2558 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)){
2559 if (sctp_add_to_socket_q(stcb->sctp_ep, stcb)) {
2560 stcb->asoc.my_rwnd_control_len += sizeof(struct mbuf);
2563 stcb->asoc.my_rwnd_control_len += sizeof(struct mbuf);
2565 SCTP_INP_WUNLOCK(stcb->sctp_ep);
2566 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
2570 sctp_notify_shutdown_event(struct sctp_tcb *stcb)
2572 struct mbuf *m_notify;
2573 struct sctp_shutdown_event *sse;
2574 struct sockaddr_in6 sin6, lsa6;
2575 struct sockaddr *to;
2578 * For TCP model AND UDP connected sockets we will send
2579 * an error up when an SHUTDOWN completes
2581 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2582 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
2583 /* mark socket closed for read/write and wakeup! */
2584 socantrcvmore(stcb->sctp_socket);
2585 socantsendmore(stcb->sctp_socket);
2588 if (!(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT))
2589 /* event not enabled */
2592 MGETHDR(m_notify, MB_DONTWAIT, MT_DATA);
2593 if (m_notify == NULL)
2596 m_notify->m_len = 0;
2597 sse = mtod(m_notify, struct sctp_shutdown_event *);
2598 sse->sse_type = SCTP_SHUTDOWN_EVENT;
2600 sse->sse_length = sizeof(struct sctp_shutdown_event);
2601 sse->sse_assoc_id = sctp_get_associd(stcb);
2603 m_notify->m_flags |= M_EOR | M_NOTIFICATION;
2604 m_notify->m_pkthdr.len = sizeof(struct sctp_shutdown_event);
2605 m_notify->m_pkthdr.rcvif = 0;
2606 m_notify->m_len = sizeof(struct sctp_shutdown_event);
2607 m_notify->m_next = NULL;
2609 to = (struct sockaddr *)&stcb->asoc.primary_destination->ro._l_addr;
2610 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) &&
2611 to->sa_family == AF_INET) {
2612 struct sockaddr_in *sin;
2614 sin = (struct sockaddr_in *)to;
2615 bzero(&sin6, sizeof(sin6));
2616 sin6.sin6_family = AF_INET6;
2617 sin6.sin6_len = sizeof(struct sockaddr_in6);
2618 sin6.sin6_addr.s6_addr16[2] = 0xffff;
2619 bcopy(&sin->sin_addr, &sin6.sin6_addr.s6_addr16[3],
2620 sizeof(sin6.sin6_addr.s6_addr16[3]));
2621 sin6.sin6_port = sin->sin_port;
2622 to = (struct sockaddr *)&sin6;
2624 /* check and strip embedded scope junk */
2625 to = (struct sockaddr *)sctp_recover_scope((struct sockaddr_in6 *)to,
2627 if (sctp_sbspace(&stcb->sctp_socket->so_rcv) < m_notify->m_len) {
2628 sctp_m_freem(m_notify);
2631 /* append to socket */
2632 SCTP_TCB_UNLOCK(stcb);
2633 SCTP_INP_WLOCK(stcb->sctp_ep);
2634 SCTP_TCB_LOCK(stcb);
2635 lwkt_gettoken(&stcb->sctp_socket->so_rcv.ssb_token);
2636 if (!sctp_sbappendaddr_nocheck(&stcb->sctp_socket->so_rcv, to,
2637 m_notify, NULL, stcb->asoc.my_vtag, stcb->sctp_ep)) {
2638 /* not enough room */
2639 sctp_m_freem(m_notify);
2640 lwkt_reltoken(&stcb->sctp_socket->so_rcv.ssb_token);
2641 SCTP_INP_WUNLOCK(stcb->sctp_ep);
2644 lwkt_reltoken(&stcb->sctp_socket->so_rcv.ssb_token);
2645 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) &&
2646 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)){
2647 if (sctp_add_to_socket_q(stcb->sctp_ep, stcb)) {
2648 stcb->asoc.my_rwnd_control_len += sizeof(struct mbuf);
2651 stcb->asoc.my_rwnd_control_len += sizeof(struct mbuf);
2653 SCTP_INP_WUNLOCK(stcb->sctp_ep);
2654 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
2658 sctp_notify_stream_reset(struct sctp_tcb *stcb,
2659 int number_entries, uint16_t *list, int flag)
2661 struct mbuf *m_notify;
2662 struct sctp_stream_reset_event *strreset;
2663 struct sockaddr_in6 sin6, lsa6;
2664 struct sockaddr *to;
2667 if (!(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_STREAM_RESETEVNT))
2668 /* event not enabled */
2671 MGETHDR(m_notify, MB_DONTWAIT, MT_DATA);
2672 if (m_notify == NULL)
2675 m_notify->m_len = 0;
2676 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
2677 if (len > M_TRAILINGSPACE(m_notify)) {
2678 MCLGET(m_notify, MB_WAIT);
2680 if (m_notify == NULL)
2684 if (len > M_TRAILINGSPACE(m_notify)) {
2685 /* never enough room */
2689 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
2690 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
2691 if (number_entries == 0) {
2692 strreset->strreset_flags = flag | SCTP_STRRESET_ALL_STREAMS;
2694 strreset->strreset_flags = flag | SCTP_STRRESET_STREAM_LIST;
2696 strreset->strreset_length = len;
2697 strreset->strreset_assoc_id = sctp_get_associd(stcb);
2698 if (number_entries) {
2700 for (i=0; i<number_entries; i++) {
2701 strreset->strreset_list[i] = list[i];
2704 m_notify->m_flags |= M_EOR | M_NOTIFICATION;
2705 m_notify->m_pkthdr.len = len;
2706 m_notify->m_pkthdr.rcvif = 0;
2707 m_notify->m_len = len;
2708 m_notify->m_next = NULL;
2709 if (sctp_sbspace(&stcb->sctp_socket->so_rcv) < m_notify->m_len) {
2711 sctp_m_freem(m_notify);
2714 to = (struct sockaddr *)&stcb->asoc.primary_destination->ro._l_addr;
2715 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_NEEDS_MAPPED_V4) &&
2716 to->sa_family == AF_INET) {
2717 struct sockaddr_in *sin;
2719 sin = (struct sockaddr_in *)to;
2720 bzero(&sin6, sizeof(sin6));
2721 sin6.sin6_family = AF_INET6;
2722 sin6.sin6_len = sizeof(struct sockaddr_in6);
2723 sin6.sin6_addr.s6_addr16[2] = 0xffff;
2724 bcopy(&sin->sin_addr, &sin6.sin6_addr.s6_addr16[3],
2725 sizeof(sin6.sin6_addr.s6_addr16[3]));
2726 sin6.sin6_port = sin->sin_port;
2727 to = (struct sockaddr *)&sin6;
2729 /* check and strip embedded scope junk */
2730 to = (struct sockaddr *)sctp_recover_scope((struct sockaddr_in6 *)to,
2732 /* append to socket */
2733 SCTP_TCB_UNLOCK(stcb);
2734 SCTP_INP_WLOCK(stcb->sctp_ep);
2735 SCTP_TCB_LOCK(stcb);
2736 lwkt_gettoken(&stcb->sctp_socket->so_rcv.ssb_token);
2737 if (!sctp_sbappendaddr_nocheck(&stcb->sctp_socket->so_rcv, to,
2738 m_notify, NULL, stcb->asoc.my_vtag, stcb->sctp_ep)) {
2739 /* not enough room */
2740 sctp_m_freem(m_notify);
2741 lwkt_reltoken(&stcb->sctp_socket->so_rcv.ssb_token);
2742 SCTP_INP_WUNLOCK(stcb->sctp_ep);
2745 lwkt_reltoken(&stcb->sctp_socket->so_rcv.ssb_token);
2746 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) &&
2747 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)){
2748 if (sctp_add_to_socket_q(stcb->sctp_ep, stcb)) {
2749 stcb->asoc.my_rwnd_control_len += sizeof(struct mbuf);
2752 stcb->asoc.my_rwnd_control_len += sizeof(struct mbuf);
2754 SCTP_INP_WUNLOCK(stcb->sctp_ep);
2755 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
2760 sctp_ulp_notify(u_int32_t notification, struct sctp_tcb *stcb,
2761 u_int32_t error, void *data)
2763 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
2764 /* No notifications up when we are in a no socket state */
2767 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
2768 /* Can't send up to a closed socket any notifications */
2771 switch (notification) {
2772 case SCTP_NOTIFY_ASSOC_UP:
2773 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error);
2775 case SCTP_NOTIFY_ASSOC_DOWN:
2776 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error);
2778 case SCTP_NOTIFY_INTERFACE_DOWN:
2780 struct sctp_nets *net;
2781 net = (struct sctp_nets *)data;
2782 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
2783 (struct sockaddr *)&net->ro._l_addr, error);
2786 case SCTP_NOTIFY_INTERFACE_UP:
2788 struct sctp_nets *net;
2789 net = (struct sctp_nets *)data;
2790 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
2791 (struct sockaddr *)&net->ro._l_addr, error);
2794 case SCTP_NOTIFY_INTERFACE_CONFIRMED:
2796 struct sctp_nets *net;
2797 net = (struct sctp_nets *)data;
2798 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
2799 (struct sockaddr *)&net->ro._l_addr, error);
2802 case SCTP_NOTIFY_DG_FAIL:
2803 sctp_notify_send_failed(stcb, error,
2804 (struct sctp_tmit_chunk *)data);
2806 case SCTP_NOTIFY_ADAPTION_INDICATION:
2807 /* Here the error is the adaption indication */
2808 sctp_notify_adaption_layer(stcb, error);
2810 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
2811 sctp_notify_partial_delivery_indication(stcb, error);
2813 case SCTP_NOTIFY_STRDATA_ERR:
2815 case SCTP_NOTIFY_ASSOC_ABORTED:
2816 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error);
2818 case SCTP_NOTIFY_PEER_OPENED_STREAM:
2820 case SCTP_NOTIFY_STREAM_OPENED_OK:
2822 case SCTP_NOTIFY_ASSOC_RESTART:
2823 sctp_notify_assoc_change(SCTP_RESTART, stcb, error);
2825 case SCTP_NOTIFY_HB_RESP:
2827 case SCTP_NOTIFY_STR_RESET_SEND:
2828 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STRRESET_OUTBOUND_STR);
2830 case SCTP_NOTIFY_STR_RESET_RECV:
2831 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STRRESET_INBOUND_STR);
2833 case SCTP_NOTIFY_ASCONF_ADD_IP:
2834 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
2837 case SCTP_NOTIFY_ASCONF_DELETE_IP:
2838 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
2841 case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
2842 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
2845 case SCTP_NOTIFY_ASCONF_SUCCESS:
2847 case SCTP_NOTIFY_ASCONF_FAILED:
2849 case SCTP_NOTIFY_PEER_SHUTDOWN:
2850 sctp_notify_shutdown_event(stcb);
2854 if (sctp_debug_on & SCTP_DEBUG_UTIL1) {
2855 kprintf("NOTIFY: unknown notification %xh (%u)\n",
2856 notification, notification);
2858 #endif /* SCTP_DEBUG */
2864 sctp_report_all_outbound(struct sctp_tcb *stcb)
2866 struct sctp_association *asoc;
2867 struct sctp_stream_out *outs;
2868 struct sctp_tmit_chunk *chk;
2872 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
2875 /* now through all the gunk freeing chunks */
2876 TAILQ_FOREACH(outs, &asoc->out_wheel, next_spoke) {
2877 /* now clean up any chunks here */
2878 chk = TAILQ_FIRST(&outs->outqueue);
2880 stcb->asoc.stream_queue_cnt--;
2881 TAILQ_REMOVE(&outs->outqueue, chk, sctp_next);
2882 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb,
2883 SCTP_NOTIFY_DATAGRAM_UNSENT, chk);
2885 sctp_m_freem(chk->data);
2889 sctp_free_remote_addr(chk->whoTo);
2892 /* Free the chunk */
2893 SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_chunk, chk);
2894 sctppcbinfo.ipi_count_chunk--;
2895 if ((int)sctppcbinfo.ipi_count_chunk < 0) {
2896 panic("Chunk count is negative");
2898 sctppcbinfo.ipi_gencnt_chunk++;
2899 chk = TAILQ_FIRST(&outs->outqueue);
2902 /* pending send queue SHOULD be empty */
2903 if (!TAILQ_EMPTY(&asoc->send_queue)) {
2904 chk = TAILQ_FIRST(&asoc->send_queue);
2906 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
2907 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb, SCTP_NOTIFY_DATAGRAM_UNSENT, chk);
2909 sctp_m_freem(chk->data);
2913 sctp_free_remote_addr(chk->whoTo);
2915 SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_chunk, chk);
2916 sctppcbinfo.ipi_count_chunk--;
2917 if ((int)sctppcbinfo.ipi_count_chunk < 0) {
2918 panic("Chunk count is negative");
2920 sctppcbinfo.ipi_gencnt_chunk++;
2921 chk = TAILQ_FIRST(&asoc->send_queue);
2924 /* sent queue SHOULD be empty */
2925 if (!TAILQ_EMPTY(&asoc->sent_queue)) {
2926 chk = TAILQ_FIRST(&asoc->sent_queue);
2928 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
2929 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb,
2930 SCTP_NOTIFY_DATAGRAM_SENT, chk);
2932 sctp_m_freem(chk->data);
2936 sctp_free_remote_addr(chk->whoTo);
2938 SCTP_ZONE_FREE(sctppcbinfo.ipi_zone_chunk, chk);
2939 sctppcbinfo.ipi_count_chunk--;
2940 if ((int)sctppcbinfo.ipi_count_chunk < 0) {
2941 panic("Chunk count is negative");
2943 sctppcbinfo.ipi_gencnt_chunk++;
2944 chk = TAILQ_FIRST(&asoc->sent_queue);
2950 sctp_abort_notification(struct sctp_tcb *stcb, int error)
2953 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
2956 /* Tell them we lost the asoc */
2957 sctp_report_all_outbound(stcb);
2958 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_ABORTED, stcb, error, NULL);
2962 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2963 struct mbuf *m, int iphlen, struct sctphdr *sh, struct mbuf *op_err)
2969 /* We have a TCB to abort, send notification too */
2970 vtag = stcb->asoc.peer_vtag;
2971 sctp_abort_notification(stcb, 0);
2973 sctp_send_abort(m, iphlen, sh, vtag, op_err);
2975 /* Ok, now lets free it */
2976 sctp_free_assoc(inp, stcb);
2978 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
2979 if (LIST_FIRST(&inp->sctp_asoc_list) == NULL) {
2980 sctp_inpcb_free(inp, 1);
2987 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2988 int error, struct mbuf *op_err)
2991 /* Got to have a TCB */
2992 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
2993 if (LIST_FIRST(&inp->sctp_asoc_list) == NULL) {
2994 sctp_inpcb_free(inp, 1);
2999 /* notify the ulp */
3000 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0)
3001 sctp_abort_notification(stcb, error);
3002 /* notify the peer */
3003 sctp_send_abort_tcb(stcb, op_err);
3004 /* now free the asoc */
3005 sctp_free_assoc(inp, stcb);
3009 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset, struct sctphdr *sh,
3010 struct sctp_inpcb *inp, struct mbuf *op_err)
3012 struct sctp_chunkhdr *ch, chunk_buf;
3013 unsigned int chk_length;
3015 /* Generate a TO address for future reference */
3016 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
3017 if (LIST_FIRST(&inp->sctp_asoc_list) == NULL) {
3018 sctp_inpcb_free(inp, 1);
3021 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
3022 sizeof(*ch), (u_int8_t *)&chunk_buf);
3023 while (ch != NULL) {
3024 chk_length = ntohs(ch->chunk_length);
3025 if (chk_length < sizeof(*ch)) {
3026 /* break to abort land */
3029 switch (ch->chunk_type) {
3030 case SCTP_PACKET_DROPPED:
3031 /* we don't respond to pkt-dropped */
3033 case SCTP_ABORT_ASSOCIATION:
3034 /* we don't respond with an ABORT to an ABORT */
3036 case SCTP_SHUTDOWN_COMPLETE:
3038 * we ignore it since we are not waiting for it
3042 case SCTP_SHUTDOWN_ACK:
3043 sctp_send_shutdown_complete2(m, iphlen, sh);
3048 offset += SCTP_SIZE32(chk_length);
3049 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
3050 sizeof(*ch), (u_int8_t *)&chunk_buf);
3052 sctp_send_abort(m, iphlen, sh, 0, op_err);
3056 * check the inbound datagram to make sure there is not an abort
3057 * inside it, if there is return 1, else return 0.
3060 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, int *vtagfill)
3062 struct sctp_chunkhdr *ch;
3063 struct sctp_init_chunk *init_chk, chunk_buf;
3065 unsigned int chk_length;
3067 offset = iphlen + sizeof(struct sctphdr);
3068 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
3069 (u_int8_t *)&chunk_buf);
3070 while (ch != NULL) {
3071 chk_length = ntohs(ch->chunk_length);
3072 if (chk_length < sizeof(*ch)) {
3073 /* packet is probably corrupt */
3076 /* we seem to be ok, is it an abort? */
3077 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
3078 /* yep, tell them */
3081 if (ch->chunk_type == SCTP_INITIATION) {
3082 /* need to update the Vtag */
3083 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
3084 offset, sizeof(*init_chk), (u_int8_t *)&chunk_buf);
3085 if (init_chk != NULL) {
3086 *vtagfill = ntohl(init_chk->init.initiate_tag);
3089 /* Nope, move to the next chunk */
3090 offset += SCTP_SIZE32(chk_length);
3091 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
3092 sizeof(*ch), (u_int8_t *)&chunk_buf);
3098 * currently (2/02), ifa_addr embeds scope_id's and don't
3099 * have sin6_scope_id set (i.e. it's 0)
3100 * so, create this function to compare link local scopes
3103 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
3105 struct sockaddr_in6 a, b;
3111 if (a.sin6_scope_id == 0)
3112 if (in6_recoverscope(&a, &a.sin6_addr, NULL)) {
3113 /* can't get scope, so can't match */
3116 if (b.sin6_scope_id == 0)
3117 if (in6_recoverscope(&b, &b.sin6_addr, NULL)) {
3118 /* can't get scope, so can't match */
3121 if (a.sin6_scope_id != b.sin6_scope_id)
3128 * returns a sockaddr_in6 with embedded scope recovered and removed
3130 struct sockaddr_in6 *
3131 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
3134 /* check and strip embedded scope junk */
3135 if (addr->sin6_family == AF_INET6) {
3136 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
3137 if (addr->sin6_scope_id == 0) {
3139 if (!in6_recoverscope(store, &store->sin6_addr,
3141 /* use the recovered scope */
3144 /* else, return the original "to" addr */
3152 * are the two addresses the same? currently a "scopeless" check
3153 * returns: 1 if same, 0 if not
3156 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
3160 if (sa1 == NULL || sa2 == NULL)
3163 /* must be the same family */
3164 if (sa1->sa_family != sa2->sa_family)
3167 if (sa1->sa_family == AF_INET6) {
3168 /* IPv6 addresses */
3169 struct sockaddr_in6 *sin6_1, *sin6_2;
3171 sin6_1 = (struct sockaddr_in6 *)sa1;
3172 sin6_2 = (struct sockaddr_in6 *)sa2;
3173 return (SCTP6_ARE_ADDR_EQUAL(&sin6_1->sin6_addr,
3174 &sin6_2->sin6_addr));
3175 } else if (sa1->sa_family == AF_INET) {
3176 /* IPv4 addresses */
3177 struct sockaddr_in *sin_1, *sin_2;
3179 sin_1 = (struct sockaddr_in *)sa1;
3180 sin_2 = (struct sockaddr_in *)sa2;
3181 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
3183 /* we don't do these... */
3189 sctp_print_address(struct sockaddr *sa)
3192 if (sa->sa_family == AF_INET6) {
3193 struct sockaddr_in6 *sin6;
3194 sin6 = (struct sockaddr_in6 *)sa;
3195 kprintf("IPv6 address: %s:%d scope:%u\n",
3196 ip6_sprintf(&sin6->sin6_addr), ntohs(sin6->sin6_port),
3197 sin6->sin6_scope_id);
3198 } else if (sa->sa_family == AF_INET) {
3199 struct sockaddr_in *sin;
3200 sin = (struct sockaddr_in *)sa;
3201 kprintf("IPv4 address: %s:%d\n", inet_ntoa(sin->sin_addr),
3202 ntohs(sin->sin_port));
3209 sctp_print_address_pkt(struct ip *iph, struct sctphdr *sh)
3211 if (iph->ip_v == IPVERSION) {
3212 struct sockaddr_in lsa, fsa;
3214 bzero(&lsa, sizeof(lsa));
3215 lsa.sin_len = sizeof(lsa);
3216 lsa.sin_family = AF_INET;
3217 lsa.sin_addr = iph->ip_src;
3218 lsa.sin_port = sh->src_port;
3219 bzero(&fsa, sizeof(fsa));
3220 fsa.sin_len = sizeof(fsa);
3221 fsa.sin_family = AF_INET;
3222 fsa.sin_addr = iph->ip_dst;
3223 fsa.sin_port = sh->dest_port;
3225 sctp_print_address((struct sockaddr *)&lsa);
3227 sctp_print_address((struct sockaddr *)&fsa);
3228 } else if (iph->ip_v == (IPV6_VERSION >> 4)) {
3229 struct ip6_hdr *ip6;
3230 struct sockaddr_in6 lsa6, fsa6;
3232 ip6 = (struct ip6_hdr *)iph;
3233 bzero(&lsa6, sizeof(lsa6));
3234 lsa6.sin6_len = sizeof(lsa6);
3235 lsa6.sin6_family = AF_INET6;
3236 lsa6.sin6_addr = ip6->ip6_src;
3237 lsa6.sin6_port = sh->src_port;
3238 bzero(&fsa6, sizeof(fsa6));
3239 fsa6.sin6_len = sizeof(fsa6);
3240 fsa6.sin6_family = AF_INET6;
3241 fsa6.sin6_addr = ip6->ip6_dst;
3242 fsa6.sin6_port = sh->dest_port;
3244 sctp_print_address((struct sockaddr *)&lsa6);
3246 sctp_print_address((struct sockaddr *)&fsa6);
3250 #if defined(__FreeBSD__) || defined(__APPLE__)
3252 /* cloned from uipc_socket.c */
3254 #define SCTP_SBLINKRECORD(sb, m0) do { \
3255 if ((sb)->sb_lastrecord != NULL) \
3256 (sb)->sb_lastrecord->m_nextpkt = (m0); \
3258 (sb)->sb_mb = (m0); \
3259 (sb)->sb_lastrecord = (m0); \
3260 } while (/*CONSTCOND*/0)
3265 sctp_sbappendaddr_nocheck(struct signalsockbuf *ssb, struct sockaddr *asa, struct mbuf *m0,
3266 struct mbuf *control, u_int32_t tag,
3267 struct sctp_inpcb *inp)
3272 if (m0 && (m0->m_flags & M_PKTHDR) == 0)
3273 panic("sctp_sbappendaddr_nocheck");
3275 for (n = control; n; n = n->m_next) {
3276 if (n->m_next == 0) /* get pointer to last control buf */
3279 if (((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) == 0) ||
3280 ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)== 0)) {
3281 uint32_t len = asa->sa_len; /* workaround GCC stupidity */
3285 MGETHDR(m, MB_DONTWAIT, MT_SONAME);
3291 kprintf("Duplicate mbuf allocated %p in and mget returned %p?\n",
3294 panic("more than once");
3299 m->m_len = asa->sa_len;
3300 bcopy((caddr_t)asa, mtod(m, caddr_t), asa->sa_len);
3306 n->m_next = m0; /* concatenate data to control */
3310 m->m_next = control;
3313 m->m_pkthdr.csum_data = (int)tag;
3316 for (n = m; n; n = n->m_next)
3317 sballoc(&ssb->sb, n);
3318 if (ssb->ssb_mb == NULL) {
3319 inp->sctp_vtag_first = tag;
3321 if ((n = ssb->ssb_mb) != NULL) {
3322 if ((n->m_nextpkt != inp->sb_last_mpkt) && (n->m_nextpkt == NULL)) {
3323 inp->sb_last_mpkt = NULL;
3325 if (inp->sb_last_mpkt)
3326 inp->sb_last_mpkt->m_nextpkt = m;
3328 while (n->m_nextpkt) {
3333 inp->sb_last_mpkt = m;
3335 inp->sb_last_mpkt = ssb->ssb_mb = m;
3336 inp->sctp_vtag_first = tag;
3338 SOCKBUF_UNLOCK(ssb);
3342 /*************HOLD THIS COMMENT FOR PATCH FILE OF
3343 *************ALTERNATE ROUTING CODE
3346 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
3347 *************ALTERNATE ROUTING CODE
3351 sctp_generate_invmanparam(int err)
3353 /* Return a MBUF with a invalid mandatory parameter */
3356 MGET(m, MB_DONTWAIT, MT_DATA);
3358 struct sctp_paramhdr *ph;
3359 m->m_len = sizeof(struct sctp_paramhdr);
3360 ph = mtod(m, struct sctp_paramhdr *);
3361 ph->param_length = htons(sizeof(struct sctp_paramhdr));
3362 ph->param_type = htons(err);
3368 sctp_should_be_moved(struct mbuf *this, struct sctp_association *asoc)
3372 * given a mbuf chain, look through it finding
3373 * the M_PKTHDR and return 1 if it belongs to
3374 * the association given. We tell this by
3375 * a kludge where we stuff the my_vtag of the asoc
3376 * into the m->m_pkthdr.csum_data/csum field.
3380 if (m->m_flags & M_PKTHDR) {
3382 #if defined(__OpenBSD__)
3383 if ((u_int32_t)m->m_pkthdr.csum == asoc->my_vtag)
3385 if ((u_int32_t)m->m_pkthdr.csum_data == asoc->my_vtag)
3398 sctp_get_first_vtag_from_sb(struct socket *so)
3400 struct mbuf *this, *at;
3404 lwkt_gettoken(&so->so_rcv.ssb_token);
3405 if (so->so_rcv.ssb_mb) {
3407 this = so->so_rcv.ssb_mb;
3410 /* get to the m_pkthdr */
3412 if (at->m_flags & M_PKTHDR)
3418 /* now do we have a m_pkthdr */
3419 if (at && (at->m_flags & M_PKTHDR)) {
3421 #if defined(__OpenBSD__)
3422 if ((u_int32_t)at->m_pkthdr.csum != 0)
3424 if ((u_int32_t)at->m_pkthdr.csum_data != 0)
3428 #if defined(__OpenBSD__)
3429 retval = (u_int32_t)at->m_pkthdr.csum;
3432 (u_int32_t)at->m_pkthdr.csum_data;
3437 this = this->m_nextpkt;
3441 lwkt_reltoken(&so->so_rcv.ssb_token);
3446 sctp_grub_through_socket_buffer(struct sctp_inpcb *inp, struct socket *old,
3447 struct socket *new, struct sctp_tcb *stcb)
3449 struct mbuf **put, **take, *next, *this;
3450 struct signalsockbuf *old_sb, *new_sb;
3451 struct sctp_association *asoc;
3455 old_sb = &old->so_rcv;
3456 new_sb = &new->so_rcv;
3457 if (old_sb->ssb_mb == NULL) {
3458 /* Nothing to move */
3461 SOCKBUF_LOCK(old_sb);
3462 SOCKBUF_LOCK(new_sb);
3463 lwkt_gettoken(&old_sb->ssb_token);
3464 lwkt_gettoken(&new_sb->ssb_token);
3466 if (inp->sctp_vtag_first == asoc->my_vtag) {
3467 /* First one must be moved */
3469 for (mm = old_sb->ssb_mb; mm; mm = mm->m_next) {
3471 * Go down the chain and fix
3472 * the space allocation of the
3475 sbfree(&old_sb->sb, mm);
3476 sballoc(&new_sb->sb, mm);
3478 new_sb->ssb_mb = old_sb->ssb_mb;
3479 old_sb->ssb_mb = new_sb->ssb_mb->m_nextpkt;
3480 new_sb->ssb_mb->m_nextpkt = NULL;
3481 put = &new_sb->ssb_mb->m_nextpkt;
3484 put = &new_sb->ssb_mb;
3487 take = &old_sb->ssb_mb;
3488 next = old_sb->ssb_mb;
3491 /* postion for next one */
3492 next = this->m_nextpkt;
3493 /* check the tag of this packet */
3494 if (sctp_should_be_moved(this, asoc)) {
3495 /* yes this needs to be moved */
3497 *take = this->m_nextpkt;
3498 this->m_nextpkt = NULL;
3500 for (mm = this; mm; mm = mm->m_next) {
3502 * Go down the chain and fix
3503 * the space allocation of the
3506 sbfree(&old_sb->sb, mm);
3507 sballoc(&new_sb->sb, mm);
3509 put = &this->m_nextpkt;
3512 /* no advance our take point. */
3513 take = &this->m_nextpkt;
3518 * Ok so now we must re-postion vtag_first to
3519 * match the new first one since we moved the
3522 inp->sctp_vtag_first = sctp_get_first_vtag_from_sb(old);
3524 lwkt_reltoken(&new_sb->ssb_token);
3525 lwkt_reltoken(&old_sb->ssb_token);
3526 SOCKBUF_UNLOCK(old_sb);
3527 SOCKBUF_UNLOCK(new_sb);
3531 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
3532 struct sctp_tmit_chunk *tp1)
3534 if (tp1->data == NULL) {
3537 #ifdef SCTP_MBCNT_LOGGING
3538 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
3539 asoc->total_output_queue_size,
3541 asoc->total_output_mbuf_queue_size,
3544 if (asoc->total_output_queue_size >= tp1->book_size) {
3545 asoc->total_output_queue_size -= tp1->book_size;
3547 asoc->total_output_queue_size = 0;
3550 /* Now free the mbuf */
3551 if (asoc->total_output_mbuf_queue_size >= tp1->mbcnt) {
3552 asoc->total_output_mbuf_queue_size -= tp1->mbcnt;
3554 asoc->total_output_mbuf_queue_size = 0;
3556 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3557 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3558 if (stcb->sctp_socket->so_snd.ssb_cc >= tp1->book_size) {
3559 stcb->sctp_socket->so_snd.ssb_cc -= tp1->book_size;
3561 stcb->sctp_socket->so_snd.ssb_cc = 0;
3564 if (stcb->sctp_socket->so_snd.ssb_mbcnt >= tp1->mbcnt) {
3565 stcb->sctp_socket->so_snd.ssb_mbcnt -= tp1->mbcnt;
3567 stcb->sctp_socket->so_snd.ssb_mbcnt = 0;
3573 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
3574 int reason, struct sctpchunk_listhead *queue)
3578 uint8_t foundeom = 0;
3581 ret_sz += tp1->book_size;
3582 tp1->sent = SCTP_FORWARD_TSN_SKIP;
3584 sctp_free_bufspace(stcb, &stcb->asoc, tp1);
3585 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb, reason, tp1);
3586 sctp_m_freem(tp1->data);
3588 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
3590 if (tp1->flags & SCTP_PR_SCTP_BUFFER) {
3591 stcb->asoc.sent_queue_cnt_removeable--;
3593 if (queue == &stcb->asoc.send_queue) {
3594 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
3595 /* on to the sent queue */
3596 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
3598 stcb->asoc.sent_queue_cnt++;
3600 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
3601 SCTP_DATA_NOT_FRAG) {
3602 /* not frag'ed we ae done */
3605 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
3606 /* end of frag, we are done */
3610 /* Its a begin or middle piece, we must mark all of it */
3612 tp1 = TAILQ_NEXT(tp1, sctp_next);
3614 } while (tp1 && notdone);
3615 if ((foundeom == 0) && (queue == &stcb->asoc.sent_queue)) {
3617 * The multi-part message was scattered
3618 * across the send and sent queue.
3620 tp1 = TAILQ_FIRST(&stcb->asoc.send_queue);
3622 * recurse throught the send_queue too, starting at the
3626 ret_sz += sctp_release_pr_sctp_chunk(stcb, tp1, reason,
3627 &stcb->asoc.send_queue);
3629 kprintf("hmm, nothing on the send queue and no EOM?\n");
3636 * checks to see if the given address, sa, is one that is currently
3637 * known by the kernel
3638 * note: can't distinguish the same address on multiple interfaces and
3639 * doesn't handle multiple addresses with different zone/scope id's
3640 * note: ifa_ifwithaddr() compares the entire sockaddr struct
3643 sctp_find_ifa_by_addr(struct sockaddr *sa)
3647 /* go through all our known interfaces */
3648 TAILQ_FOREACH(ifn, &ifnet, if_list) {
3649 struct ifaddr_container *ifac;
3651 /* go through each interface addresses */
3652 TAILQ_FOREACH(ifac, &ifn->if_addrheads[mycpuid], ifa_link) {
3653 struct ifaddr *ifa = ifac->ifa;
3655 /* correct family? */
3656 if (ifa->ifa_addr->sa_family != sa->sa_family)
3660 if (ifa->ifa_addr->sa_family == AF_INET6) {
3662 struct sockaddr_in6 *sin1, *sin2, sin6_tmp;
3663 sin1 = (struct sockaddr_in6 *)ifa->ifa_addr;
3664 if (IN6_IS_SCOPE_LINKLOCAL(&sin1->sin6_addr)) {
3665 /* create a copy and clear scope */
3666 memcpy(&sin6_tmp, sin1,
3667 sizeof(struct sockaddr_in6));
3669 in6_clearscope(&sin1->sin6_addr);
3671 sin2 = (struct sockaddr_in6 *)sa;
3672 if (memcmp(&sin1->sin6_addr, &sin2->sin6_addr,
3673 sizeof(struct in6_addr)) == 0) {
3679 if (ifa->ifa_addr->sa_family == AF_INET) {
3681 struct sockaddr_in *sin1, *sin2;
3682 sin1 = (struct sockaddr_in *)ifa->ifa_addr;
3683 sin2 = (struct sockaddr_in *)sa;
3684 if (sin1->sin_addr.s_addr ==
3685 sin2->sin_addr.s_addr) {
3690 /* else, not AF_INET or AF_INET6, so skip */
3691 } /* end foreach ifa */
3692 } /* end foreach ifn */
3700 * here we hack in a fix for Apple's m_copym for the case where the first mbuf
3701 * in the chain is a M_PKTHDR and the length is zero
3704 sctp_pkthdr_fix(struct mbuf *m)
3708 if ((m->m_flags & M_PKTHDR) == 0) {
3713 if (m->m_len != 0) {
3714 /* not a zero length PKTHDR mbuf */
3718 /* let's move in a word into the first mbuf... yes, ugly! */
3720 if (m_nxt == NULL) {
3721 /* umm... not a very useful mbuf chain... */
3724 if ((size_t)m_nxt->m_len > sizeof(long)) {
3725 /* move over a long */
3726 bcopy(mtod(m_nxt, caddr_t), mtod(m, caddr_t), sizeof(long));
3727 /* update mbuf data pointers and lengths */
3728 m->m_len += sizeof(long);
3729 m_nxt->m_data += sizeof(long);
3730 m_nxt->m_len -= sizeof(long);
3734 inline struct mbuf *
3735 sctp_m_copym(struct mbuf *m, int off, int len, int wait)
3738 return (m_copym(m, off, len, wait));
3740 #endif /* __APPLE__ */