FreeBSD kernel IPv4 code
sctp_pcb.c
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1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
5 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
6 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
10 *
11 * a) Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
13 *
14 * b) Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the distribution.
17 *
18 * c) Neither the name of Cisco Systems, Inc. nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
33 */
34
35#include <sys/cdefs.h>
36__FBSDID("$FreeBSD$");
37
38#include <netinet/sctp_os.h>
39#include <sys/proc.h>
40#include <netinet/sctp_var.h>
41#include <netinet/sctp_sysctl.h>
42#include <netinet/sctp_pcb.h>
43#include <netinet/sctputil.h>
44#include <netinet/sctp.h>
45#include <netinet/sctp_header.h>
46#include <netinet/sctp_asconf.h>
47#include <netinet/sctp_output.h>
48#include <netinet/sctp_timer.h>
49#include <netinet/sctp_bsd_addr.h>
50#if defined(INET) || defined(INET6)
51#include <netinet/udp.h>
52#endif
53#ifdef INET6
54#include <netinet6/ip6_var.h>
55#endif
56#include <sys/sched.h>
57#include <sys/smp.h>
58#include <sys/unistd.h>
59
60/* FIX: we don't handle multiple link local scopes */
61/* "scopeless" replacement IN6_ARE_ADDR_EQUAL */
62#ifdef INET6
63int
64SCTP6_ARE_ADDR_EQUAL(struct sockaddr_in6 *a, struct sockaddr_in6 *b)
65{
66 struct sockaddr_in6 tmp_a, tmp_b;
67
68 memcpy(&tmp_a, a, sizeof(struct sockaddr_in6));
69 if (sa6_embedscope(&tmp_a, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
70 return (0);
71 }
72 memcpy(&tmp_b, b, sizeof(struct sockaddr_in6));
73 if (sa6_embedscope(&tmp_b, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
74 return (0);
75 }
76 return (IN6_ARE_ADDR_EQUAL(&tmp_a.sin6_addr, &tmp_b.sin6_addr));
77}
78#endif
79
80void
81sctp_fill_pcbinfo(struct sctp_pcbinfo *spcb)
82{
83 /*
84 * We really don't need to lock this, but I will just because it
85 * does not hurt.
86 */
87 SCTP_INP_INFO_RLOCK();
88 spcb->ep_count = SCTP_BASE_INFO(ipi_count_ep);
89 spcb->asoc_count = SCTP_BASE_INFO(ipi_count_asoc);
90 spcb->laddr_count = SCTP_BASE_INFO(ipi_count_laddr);
91 spcb->raddr_count = SCTP_BASE_INFO(ipi_count_raddr);
92 spcb->chk_count = SCTP_BASE_INFO(ipi_count_chunk);
93 spcb->readq_count = SCTP_BASE_INFO(ipi_count_readq);
94 spcb->stream_oque = SCTP_BASE_INFO(ipi_count_strmoq);
95 spcb->free_chunks = SCTP_BASE_INFO(ipi_free_chunks);
96 SCTP_INP_INFO_RUNLOCK();
97}
98
99/*-
100 * Addresses are added to VRF's (Virtual Router's). For BSD we
101 * have only the default VRF 0. We maintain a hash list of
102 * VRF's. Each VRF has its own list of sctp_ifn's. Each of
103 * these has a list of addresses. When we add a new address
104 * to a VRF we lookup the ifn/ifn_index, if the ifn does
105 * not exist we create it and add it to the list of IFN's
106 * within the VRF. Once we have the sctp_ifn, we add the
107 * address to the list. So we look something like:
108 *
109 * hash-vrf-table
110 * vrf-> ifn-> ifn -> ifn
111 * vrf |
112 * ... +--ifa-> ifa -> ifa
113 * vrf
114 *
115 * We keep these separate lists since the SCTP subsystem will
116 * point to these from its source address selection nets structure.
117 * When an address is deleted it does not happen right away on
118 * the SCTP side, it gets scheduled. What we do when a
119 * delete happens is immediately remove the address from
120 * the master list and decrement the refcount. As our
121 * addip iterator works through and frees the src address
122 * selection pointing to the sctp_ifa, eventually the refcount
123 * will reach 0 and we will delete it. Note that it is assumed
124 * that any locking on system level ifn/ifa is done at the
125 * caller of these functions and these routines will only
126 * lock the SCTP structures as they add or delete things.
127 *
128 * Other notes on VRF concepts.
129 * - An endpoint can be in multiple VRF's
130 * - An association lives within a VRF and only one VRF.
131 * - Any incoming packet we can deduce the VRF for by
132 * looking at the mbuf/pak inbound (for BSD its VRF=0 :D)
133 * - Any downward send call or connect call must supply the
134 * VRF via ancillary data or via some sort of set default
135 * VRF socket option call (again for BSD no brainer since
136 * the VRF is always 0).
137 * - An endpoint may add multiple VRF's to it.
138 * - Listening sockets can accept associations in any
139 * of the VRF's they are in but the assoc will end up
140 * in only one VRF (gotten from the packet or connect/send).
141 *
142 */
143
144struct sctp_vrf *
145sctp_allocate_vrf(int vrf_id)
146{
147 struct sctp_vrf *vrf = NULL;
148 struct sctp_vrflist *bucket;
149
150 /* First allocate the VRF structure */
151 vrf = sctp_find_vrf(vrf_id);
152 if (vrf) {
153 /* Already allocated */
154 return (vrf);
155 }
156 SCTP_MALLOC(vrf, struct sctp_vrf *, sizeof(struct sctp_vrf),
157 SCTP_M_VRF);
158 if (vrf == NULL) {
159 /* No memory */
160#ifdef INVARIANTS
161 panic("No memory for VRF:%d", vrf_id);
162#endif
163 return (NULL);
164 }
165 /* setup the VRF */
166 memset(vrf, 0, sizeof(struct sctp_vrf));
167 vrf->vrf_id = vrf_id;
168 LIST_INIT(&vrf->ifnlist);
169 vrf->total_ifa_count = 0;
170 vrf->refcount = 0;
171 /* now also setup table ids */
172 SCTP_INIT_VRF_TABLEID(vrf);
173 /* Init the HASH of addresses */
174 vrf->vrf_addr_hash = SCTP_HASH_INIT(SCTP_VRF_ADDR_HASH_SIZE,
175 &vrf->vrf_addr_hashmark);
176 if (vrf->vrf_addr_hash == NULL) {
177 /* No memory */
178#ifdef INVARIANTS
179 panic("No memory for VRF:%d", vrf_id);
180#endif
181 SCTP_FREE(vrf, SCTP_M_VRF);
182 return (NULL);
183 }
184
185 /* Add it to the hash table */
186 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
187 LIST_INSERT_HEAD(bucket, vrf, next_vrf);
188 atomic_add_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
189 return (vrf);
190}
191
192struct sctp_ifn *
193sctp_find_ifn(void *ifn, uint32_t ifn_index)
194{
195 struct sctp_ifn *sctp_ifnp;
196 struct sctp_ifnlist *hash_ifn_head;
197
198 /*
199 * We assume the lock is held for the addresses if that's wrong
200 * problems could occur :-)
201 */
202 SCTP_IPI_ADDR_LOCK_ASSERT();
203 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
204 LIST_FOREACH(sctp_ifnp, hash_ifn_head, next_bucket) {
205 if (sctp_ifnp->ifn_index == ifn_index) {
206 return (sctp_ifnp);
207 }
208 if (sctp_ifnp->ifn_p && ifn && (sctp_ifnp->ifn_p == ifn)) {
209 return (sctp_ifnp);
210 }
211 }
212 return (NULL);
213}
214
215struct sctp_vrf *
216sctp_find_vrf(uint32_t vrf_id)
217{
218 struct sctp_vrflist *bucket;
219 struct sctp_vrf *liste;
220
221 bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(vrf_id & SCTP_BASE_INFO(hashvrfmark))];
222 LIST_FOREACH(liste, bucket, next_vrf) {
223 if (vrf_id == liste->vrf_id) {
224 return (liste);
225 }
226 }
227 return (NULL);
228}
229
230void
231sctp_free_vrf(struct sctp_vrf *vrf)
232{
233 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&vrf->refcount)) {
234 if (vrf->vrf_addr_hash) {
235 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
236 vrf->vrf_addr_hash = NULL;
237 }
238 /* We zero'd the count */
239 LIST_REMOVE(vrf, next_vrf);
240 SCTP_FREE(vrf, SCTP_M_VRF);
241 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_vrfs), 1);
242 }
243}
244
245void
246sctp_free_ifn(struct sctp_ifn *sctp_ifnp)
247{
248 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifnp->refcount)) {
249 /* We zero'd the count */
250 if (sctp_ifnp->vrf) {
251 sctp_free_vrf(sctp_ifnp->vrf);
252 }
253 SCTP_FREE(sctp_ifnp, SCTP_M_IFN);
254 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
255 }
256}
257
258void
259sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu)
260{
261 struct sctp_ifn *sctp_ifnp;
262
263 sctp_ifnp = sctp_find_ifn((void *)NULL, ifn_index);
264 if (sctp_ifnp != NULL) {
265 sctp_ifnp->ifn_mtu = mtu;
266 }
267}
268
269void
270sctp_free_ifa(struct sctp_ifa *sctp_ifap)
271{
272 if (SCTP_DECREMENT_AND_CHECK_REFCOUNT(&sctp_ifap->refcount)) {
273 /* We zero'd the count */
274 if (sctp_ifap->ifn_p) {
275 sctp_free_ifn(sctp_ifap->ifn_p);
276 }
277 SCTP_FREE(sctp_ifap, SCTP_M_IFA);
278 atomic_subtract_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
279 }
280}
281
282static void
283sctp_delete_ifn(struct sctp_ifn *sctp_ifnp, int hold_addr_lock)
284{
285 struct sctp_ifn *found;
286
287 found = sctp_find_ifn(sctp_ifnp->ifn_p, sctp_ifnp->ifn_index);
288 if (found == NULL) {
289 /* Not in the list.. sorry */
290 return;
291 }
292 if (hold_addr_lock == 0) {
293 SCTP_IPI_ADDR_WLOCK();
294 } else {
295 SCTP_IPI_ADDR_WLOCK_ASSERT();
296 }
297 LIST_REMOVE(sctp_ifnp, next_bucket);
298 LIST_REMOVE(sctp_ifnp, next_ifn);
299 if (hold_addr_lock == 0) {
300 SCTP_IPI_ADDR_WUNLOCK();
301 }
302 /* Take away the reference, and possibly free it */
303 sctp_free_ifn(sctp_ifnp);
304}
305
306void
307sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr,
308 const char *if_name, uint32_t ifn_index)
309{
310 struct sctp_vrf *vrf;
311 struct sctp_ifa *sctp_ifap;
312
313 SCTP_IPI_ADDR_RLOCK();
314 vrf = sctp_find_vrf(vrf_id);
315 if (vrf == NULL) {
316 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
317 goto out;
318 }
319 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
320 if (sctp_ifap == NULL) {
321 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
322 goto out;
323 }
324 if (sctp_ifap->ifn_p == NULL) {
325 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unusable\n");
326 goto out;
327 }
328 if (if_name) {
329 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) {
330 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
331 sctp_ifap->ifn_p->ifn_name, if_name);
332 goto out;
333 }
334 } else {
335 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
336 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
337 sctp_ifap->ifn_p->ifn_index, ifn_index);
338 goto out;
339 }
340 }
341
342 sctp_ifap->localifa_flags &= (~SCTP_ADDR_VALID);
343 sctp_ifap->localifa_flags |= SCTP_ADDR_IFA_UNUSEABLE;
344out:
345 SCTP_IPI_ADDR_RUNLOCK();
346}
347
348void
349sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr,
350 const char *if_name, uint32_t ifn_index)
351{
352 struct sctp_vrf *vrf;
353 struct sctp_ifa *sctp_ifap;
354
355 SCTP_IPI_ADDR_RLOCK();
356 vrf = sctp_find_vrf(vrf_id);
357 if (vrf == NULL) {
358 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
359 goto out;
360 }
361 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
362 if (sctp_ifap == NULL) {
363 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find sctp_ifap for address\n");
364 goto out;
365 }
366 if (sctp_ifap->ifn_p == NULL) {
367 SCTPDBG(SCTP_DEBUG_PCB4, "IFA has no IFN - can't mark unusable\n");
368 goto out;
369 }
370 if (if_name) {
371 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) != 0) {
372 SCTPDBG(SCTP_DEBUG_PCB4, "IFN %s of IFA not the same as %s\n",
373 sctp_ifap->ifn_p->ifn_name, if_name);
374 goto out;
375 }
376 } else {
377 if (sctp_ifap->ifn_p->ifn_index != ifn_index) {
378 SCTPDBG(SCTP_DEBUG_PCB4, "IFA owned by ifn_index:%d down command for ifn_index:%d - ignored\n",
379 sctp_ifap->ifn_p->ifn_index, ifn_index);
380 goto out;
381 }
382 }
383
384 sctp_ifap->localifa_flags &= (~SCTP_ADDR_IFA_UNUSEABLE);
385 sctp_ifap->localifa_flags |= SCTP_ADDR_VALID;
386out:
387 SCTP_IPI_ADDR_RUNLOCK();
388}
389
390/*-
391 * Add an ifa to an ifn.
392 * Register the interface as necessary.
393 * NOTE: ADDR write lock MUST be held.
394 */
395static void
396sctp_add_ifa_to_ifn(struct sctp_ifn *sctp_ifnp, struct sctp_ifa *sctp_ifap)
397{
398 int ifa_af;
399
400 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
401 sctp_ifap->ifn_p = sctp_ifnp;
402 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
403 /* update address counts */
404 sctp_ifnp->ifa_count++;
405 ifa_af = sctp_ifap->address.sa.sa_family;
406 switch (ifa_af) {
407#ifdef INET
408 case AF_INET:
409 sctp_ifnp->num_v4++;
410 break;
411#endif
412#ifdef INET6
413 case AF_INET6:
414 sctp_ifnp->num_v6++;
415 break;
416#endif
417 default:
418 break;
419 }
420 if (sctp_ifnp->ifa_count == 1) {
421 /* register the new interface */
422 sctp_ifnp->registered_af = ifa_af;
423 }
424}
425
426/*-
427 * Remove an ifa from its ifn.
428 * If no more addresses exist, remove the ifn too. Otherwise, re-register
429 * the interface based on the remaining address families left.
430 * NOTE: ADDR write lock MUST be held.
431 */
432static void
433sctp_remove_ifa_from_ifn(struct sctp_ifa *sctp_ifap)
434{
435 LIST_REMOVE(sctp_ifap, next_ifa);
436 if (sctp_ifap->ifn_p) {
437 /* update address counts */
438 sctp_ifap->ifn_p->ifa_count--;
439 switch (sctp_ifap->address.sa.sa_family) {
440#ifdef INET
441 case AF_INET:
442 sctp_ifap->ifn_p->num_v4--;
443 break;
444#endif
445#ifdef INET6
446 case AF_INET6:
447 sctp_ifap->ifn_p->num_v6--;
448 break;
449#endif
450 default:
451 break;
452 }
453
454 if (LIST_EMPTY(&sctp_ifap->ifn_p->ifalist)) {
455 /* remove the ifn, possibly freeing it */
456 sctp_delete_ifn(sctp_ifap->ifn_p, SCTP_ADDR_LOCKED);
457 } else {
458 /* re-register address family type, if needed */
459 if ((sctp_ifap->ifn_p->num_v6 == 0) &&
460 (sctp_ifap->ifn_p->registered_af == AF_INET6)) {
461 sctp_ifap->ifn_p->registered_af = AF_INET;
462 } else if ((sctp_ifap->ifn_p->num_v4 == 0) &&
463 (sctp_ifap->ifn_p->registered_af == AF_INET)) {
464 sctp_ifap->ifn_p->registered_af = AF_INET6;
465 }
466 /* free the ifn refcount */
467 sctp_free_ifn(sctp_ifap->ifn_p);
468 }
469 sctp_ifap->ifn_p = NULL;
470 }
471}
472
473struct sctp_ifa *
474sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint32_t ifn_index,
475 uint32_t ifn_type, const char *if_name, void *ifa,
476 struct sockaddr *addr, uint32_t ifa_flags,
477 int dynamic_add)
478{
479 struct sctp_vrf *vrf;
480 struct sctp_ifn *sctp_ifnp, *new_sctp_ifnp;
481 struct sctp_ifa *sctp_ifap, *new_sctp_ifap;
482 struct sctp_ifalist *hash_addr_head;
483 struct sctp_ifnlist *hash_ifn_head;
484 uint32_t hash_of_addr;
485 int new_ifn_af = 0;
486
487#ifdef SCTP_DEBUG
488 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: adding address: ", vrf_id);
489 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
490#endif
491 SCTP_MALLOC(new_sctp_ifnp, struct sctp_ifn *,
492 sizeof(struct sctp_ifn), SCTP_M_IFN);
493 if (new_sctp_ifnp == NULL) {
494#ifdef INVARIANTS
495 panic("No memory for IFN");
496#endif
497 return (NULL);
498 }
499 SCTP_MALLOC(new_sctp_ifap, struct sctp_ifa *, sizeof(struct sctp_ifa), SCTP_M_IFA);
500 if (new_sctp_ifap == NULL) {
501#ifdef INVARIANTS
502 panic("No memory for IFA");
503#endif
504 SCTP_FREE(new_sctp_ifnp, SCTP_M_IFN);
505 return (NULL);
506 }
507
508 SCTP_IPI_ADDR_WLOCK();
509 sctp_ifnp = sctp_find_ifn(ifn, ifn_index);
510 if (sctp_ifnp) {
511 vrf = sctp_ifnp->vrf;
512 } else {
513 vrf = sctp_find_vrf(vrf_id);
514 if (vrf == NULL) {
515 vrf = sctp_allocate_vrf(vrf_id);
516 if (vrf == NULL) {
517 SCTP_IPI_ADDR_WUNLOCK();
518 SCTP_FREE(new_sctp_ifnp, SCTP_M_IFN);
519 SCTP_FREE(new_sctp_ifap, SCTP_M_IFA);
520 return (NULL);
521 }
522 }
523 }
524 if (sctp_ifnp == NULL) {
525 /*
526 * build one and add it, can't hold lock until after malloc
527 * done though.
528 */
529 sctp_ifnp = new_sctp_ifnp;
530 new_sctp_ifnp = NULL;
531 memset(sctp_ifnp, 0, sizeof(struct sctp_ifn));
532 sctp_ifnp->ifn_index = ifn_index;
533 sctp_ifnp->ifn_p = ifn;
534 sctp_ifnp->ifn_type = ifn_type;
535 sctp_ifnp->refcount = 0;
536 sctp_ifnp->vrf = vrf;
537 atomic_add_int(&vrf->refcount, 1);
538 sctp_ifnp->ifn_mtu = SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index);
539 if (if_name != NULL) {
540 SCTP_SNPRINTF(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", if_name);
541 } else {
542 SCTP_SNPRINTF(sctp_ifnp->ifn_name, SCTP_IFNAMSIZ, "%s", "unknown");
543 }
544 hash_ifn_head = &SCTP_BASE_INFO(vrf_ifn_hash)[(ifn_index & SCTP_BASE_INFO(vrf_ifn_hashmark))];
545 LIST_INIT(&sctp_ifnp->ifalist);
546 LIST_INSERT_HEAD(hash_ifn_head, sctp_ifnp, next_bucket);
547 LIST_INSERT_HEAD(&vrf->ifnlist, sctp_ifnp, next_ifn);
548 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifns), 1);
549 new_ifn_af = 1;
550 }
551 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
552 if (sctp_ifap) {
553 /* Hmm, it already exists? */
554 if ((sctp_ifap->ifn_p) &&
555 (sctp_ifap->ifn_p->ifn_index == ifn_index)) {
556 SCTPDBG(SCTP_DEBUG_PCB4, "Using existing ifn %s (0x%x) for ifa %p\n",
557 sctp_ifap->ifn_p->ifn_name, ifn_index,
558 (void *)sctp_ifap);
559 if (new_ifn_af) {
560 /* Remove the created one that we don't want */
561 sctp_delete_ifn(sctp_ifnp, SCTP_ADDR_LOCKED);
562 }
563 if (sctp_ifap->localifa_flags & SCTP_BEING_DELETED) {
564 /* easy to solve, just switch back to active */
565 SCTPDBG(SCTP_DEBUG_PCB4, "Clearing deleted ifa flag\n");
566 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
567 sctp_ifap->ifn_p = sctp_ifnp;
568 atomic_add_int(&sctp_ifap->ifn_p->refcount, 1);
569 }
570 exit_stage_left:
571 SCTP_IPI_ADDR_WUNLOCK();
572 if (new_sctp_ifnp != NULL) {
573 SCTP_FREE(new_sctp_ifnp, SCTP_M_IFN);
574 }
575 SCTP_FREE(new_sctp_ifap, SCTP_M_IFA);
576 return (sctp_ifap);
577 } else {
578 if (sctp_ifap->ifn_p) {
579 /*
580 * The last IFN gets the address, remove the
581 * old one
582 */
583 SCTPDBG(SCTP_DEBUG_PCB4, "Moving ifa %p from %s (0x%x) to %s (0x%x)\n",
584 (void *)sctp_ifap, sctp_ifap->ifn_p->ifn_name,
585 sctp_ifap->ifn_p->ifn_index, if_name,
586 ifn_index);
587 /* remove the address from the old ifn */
588 sctp_remove_ifa_from_ifn(sctp_ifap);
589 /* move the address over to the new ifn */
590 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
591 goto exit_stage_left;
592 } else {
593 /* repair ifnp which was NULL ? */
594 sctp_ifap->localifa_flags = SCTP_ADDR_VALID;
595 SCTPDBG(SCTP_DEBUG_PCB4, "Repairing ifn %p for ifa %p\n",
596 (void *)sctp_ifnp, (void *)sctp_ifap);
597 sctp_add_ifa_to_ifn(sctp_ifnp, sctp_ifap);
598 }
599 goto exit_stage_left;
600 }
601 }
602 sctp_ifap = new_sctp_ifap;
603 memset(sctp_ifap, 0, sizeof(struct sctp_ifa));
604 sctp_ifap->ifn_p = sctp_ifnp;
605 atomic_add_int(&sctp_ifnp->refcount, 1);
606 sctp_ifap->vrf_id = vrf_id;
607 sctp_ifap->ifa = ifa;
608 memcpy(&sctp_ifap->address, addr, addr->sa_len);
609 sctp_ifap->localifa_flags = SCTP_ADDR_VALID | SCTP_ADDR_DEFER_USE;
610 sctp_ifap->flags = ifa_flags;
611 /* Set scope */
612 switch (sctp_ifap->address.sa.sa_family) {
613#ifdef INET
614 case AF_INET:
615 {
616 struct sockaddr_in *sin;
617
618 sin = &sctp_ifap->address.sin;
619 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
620 (IN4_ISLOOPBACK_ADDRESS(&sin->sin_addr))) {
621 sctp_ifap->src_is_loop = 1;
622 }
623 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
624 sctp_ifap->src_is_priv = 1;
625 }
626 sctp_ifnp->num_v4++;
627 if (new_ifn_af)
628 new_ifn_af = AF_INET;
629 break;
630 }
631#endif
632#ifdef INET6
633 case AF_INET6:
634 {
635 /* ok to use deprecated addresses? */
636 struct sockaddr_in6 *sin6;
637
638 sin6 = &sctp_ifap->address.sin6;
639 if (SCTP_IFN_IS_IFT_LOOP(sctp_ifap->ifn_p) ||
640 (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr))) {
641 sctp_ifap->src_is_loop = 1;
642 }
643 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
644 sctp_ifap->src_is_priv = 1;
645 }
646 sctp_ifnp->num_v6++;
647 if (new_ifn_af)
648 new_ifn_af = AF_INET6;
649 break;
650 }
651#endif
652 default:
653 new_ifn_af = 0;
654 break;
655 }
656 hash_of_addr = sctp_get_ifa_hash_val(&sctp_ifap->address.sa);
657
658 if ((sctp_ifap->src_is_priv == 0) &&
659 (sctp_ifap->src_is_loop == 0)) {
660 sctp_ifap->src_is_glob = 1;
661 }
662 hash_addr_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
663 LIST_INSERT_HEAD(hash_addr_head, sctp_ifap, next_bucket);
664 sctp_ifap->refcount = 1;
665 LIST_INSERT_HEAD(&sctp_ifnp->ifalist, sctp_ifap, next_ifa);
666 sctp_ifnp->ifa_count++;
667 vrf->total_ifa_count++;
668 atomic_add_int(&SCTP_BASE_INFO(ipi_count_ifas), 1);
669 if (new_ifn_af) {
670 sctp_ifnp->registered_af = new_ifn_af;
671 }
672 SCTP_IPI_ADDR_WUNLOCK();
673 if (new_sctp_ifnp != NULL) {
674 SCTP_FREE(new_sctp_ifnp, SCTP_M_IFN);
675 }
676
677 if (dynamic_add) {
678 /*
679 * Bump up the refcount so that when the timer completes it
680 * will drop back down.
681 */
682 struct sctp_laddr *wi;
683
684 atomic_add_int(&sctp_ifap->refcount, 1);
685 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
686 if (wi == NULL) {
687 /*
688 * Gak, what can we do? We have lost an address
689 * change can you say HOSED?
690 */
691 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
692 /* Opps, must decrement the count */
693 sctp_del_addr_from_vrf(vrf_id, addr, ifn_index,
694 if_name);
695 return (NULL);
696 }
697 SCTP_INCR_LADDR_COUNT();
698 memset(wi, 0, sizeof(*wi));
699 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
700 wi->ifa = sctp_ifap;
701 wi->action = SCTP_ADD_IP_ADDRESS;
702
703 SCTP_WQ_ADDR_LOCK();
704 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
705 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
706 (struct sctp_inpcb *)NULL,
707 (struct sctp_tcb *)NULL,
708 (struct sctp_nets *)NULL);
709 SCTP_WQ_ADDR_UNLOCK();
710 } else {
711 /* it's ready for use */
712 sctp_ifap->localifa_flags &= ~SCTP_ADDR_DEFER_USE;
713 }
714 return (sctp_ifap);
715}
716
717void
718sctp_del_addr_from_vrf(uint32_t vrf_id, struct sockaddr *addr,
719 uint32_t ifn_index, const char *if_name)
720{
721 struct sctp_vrf *vrf;
722 struct sctp_ifa *sctp_ifap = NULL;
723
724 SCTP_IPI_ADDR_WLOCK();
725 vrf = sctp_find_vrf(vrf_id);
726 if (vrf == NULL) {
727 SCTPDBG(SCTP_DEBUG_PCB4, "Can't find vrf_id 0x%x\n", vrf_id);
728 goto out_now;
729 }
730
731#ifdef SCTP_DEBUG
732 SCTPDBG(SCTP_DEBUG_PCB4, "vrf_id 0x%x: deleting address:", vrf_id);
733 SCTPDBG_ADDR(SCTP_DEBUG_PCB4, addr);
734#endif
735 sctp_ifap = sctp_find_ifa_by_addr(addr, vrf->vrf_id, SCTP_ADDR_LOCKED);
736 if (sctp_ifap) {
737 /* Validate the delete */
738 if (sctp_ifap->ifn_p) {
739 int valid = 0;
740
741 /*-
742 * The name has priority over the ifn_index
743 * if its given.
744 */
745 if (if_name) {
746 if (strncmp(if_name, sctp_ifap->ifn_p->ifn_name, SCTP_IFNAMSIZ) == 0) {
747 /* They match its a correct delete */
748 valid = 1;
749 }
750 }
751 if (!valid) {
752 /* last ditch check ifn_index */
753 if (ifn_index == sctp_ifap->ifn_p->ifn_index) {
754 valid = 1;
755 }
756 }
757 if (!valid) {
758 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s does not match addresses\n",
759 ifn_index, ((if_name == NULL) ? "NULL" : if_name));
760 SCTPDBG(SCTP_DEBUG_PCB4, "ifn:%d ifname:%s - ignoring delete\n",
761 sctp_ifap->ifn_p->ifn_index, sctp_ifap->ifn_p->ifn_name);
762 SCTP_IPI_ADDR_WUNLOCK();
763 return;
764 }
765 }
766 SCTPDBG(SCTP_DEBUG_PCB4, "Deleting ifa %p\n", (void *)sctp_ifap);
767 sctp_ifap->localifa_flags &= SCTP_ADDR_VALID;
768 /*
769 * We don't set the flag. This means that the structure will
770 * hang around in EP's that have bound specific to it until
771 * they close. This gives us TCP like behavior if someone
772 * removes an address (or for that matter adds it right
773 * back).
774 */
775 /* sctp_ifap->localifa_flags |= SCTP_BEING_DELETED; */
776 vrf->total_ifa_count--;
777 LIST_REMOVE(sctp_ifap, next_bucket);
778 sctp_remove_ifa_from_ifn(sctp_ifap);
779 }
780#ifdef SCTP_DEBUG
781 else {
782 SCTPDBG(SCTP_DEBUG_PCB4, "Del Addr-ifn:%d Could not find address:",
783 ifn_index);
784 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
785 }
786#endif
787
788out_now:
789 SCTP_IPI_ADDR_WUNLOCK();
790 if (sctp_ifap) {
791 struct sctp_laddr *wi;
792
793 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
794 if (wi == NULL) {
795 /*
796 * Gak, what can we do? We have lost an address
797 * change can you say HOSED?
798 */
799 SCTPDBG(SCTP_DEBUG_PCB4, "Lost an address change?\n");
800
801 /* Oops, must decrement the count */
802 sctp_free_ifa(sctp_ifap);
803 return;
804 }
805 SCTP_INCR_LADDR_COUNT();
806 memset(wi, 0, sizeof(*wi));
807 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
808 wi->ifa = sctp_ifap;
809 wi->action = SCTP_DEL_IP_ADDRESS;
810 SCTP_WQ_ADDR_LOCK();
811 /*
812 * Should this really be a tailq? As it is we will process
813 * the newest first :-0
814 */
815 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
816 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
817 (struct sctp_inpcb *)NULL,
818 (struct sctp_tcb *)NULL,
819 (struct sctp_nets *)NULL);
820 SCTP_WQ_ADDR_UNLOCK();
821 }
822 return;
823}
824
825static int
826sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
827{
828 int loopback_scope;
829#if defined(INET)
830 int ipv4_local_scope, ipv4_addr_legal;
831#endif
832#if defined(INET6)
833 int local_scope, site_scope, ipv6_addr_legal;
834#endif
835 struct sctp_vrf *vrf;
836 struct sctp_ifn *sctp_ifn;
837 struct sctp_ifa *sctp_ifa;
838
839 loopback_scope = stcb->asoc.scope.loopback_scope;
840#if defined(INET)
841 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
842 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
843#endif
844#if defined(INET6)
845 local_scope = stcb->asoc.scope.local_scope;
846 site_scope = stcb->asoc.scope.site_scope;
847 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
848#endif
849
850 SCTP_IPI_ADDR_RLOCK();
851 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
852 if (vrf == NULL) {
853 /* no vrf, no addresses */
854 SCTP_IPI_ADDR_RUNLOCK();
855 return (0);
856 }
857
858 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
859 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
860 if ((loopback_scope == 0) &&
861 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
862 continue;
863 }
864 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
865 if (sctp_is_addr_restricted(stcb, sctp_ifa) &&
866 (!sctp_is_addr_pending(stcb, sctp_ifa))) {
867 /*
868 * We allow pending addresses, where
869 * we have sent an asconf-add to be
870 * considered valid.
871 */
872 continue;
873 }
874 if (sctp_ifa->address.sa.sa_family != to->sa_family) {
875 continue;
876 }
877 switch (sctp_ifa->address.sa.sa_family) {
878#ifdef INET
879 case AF_INET:
880 if (ipv4_addr_legal) {
881 struct sockaddr_in *sin,
882 *rsin;
883
884 sin = &sctp_ifa->address.sin;
885 rsin = (struct sockaddr_in *)to;
886 if ((ipv4_local_scope == 0) &&
887 IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
888 continue;
889 }
890 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
891 &sin->sin_addr) != 0) {
892 continue;
893 }
894 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
895 SCTP_IPI_ADDR_RUNLOCK();
896 return (1);
897 }
898 }
899 break;
900#endif
901#ifdef INET6
902 case AF_INET6:
903 if (ipv6_addr_legal) {
904 struct sockaddr_in6 *sin6,
905 *rsin6;
906
907 sin6 = &sctp_ifa->address.sin6;
908 rsin6 = (struct sockaddr_in6 *)to;
909 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
910 &sin6->sin6_addr) != 0) {
911 continue;
912 }
913 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
914 if (local_scope == 0)
915 continue;
916 if (sin6->sin6_scope_id == 0) {
917 if (sa6_recoverscope(sin6) != 0)
918 continue;
919 }
920 }
921 if ((site_scope == 0) &&
922 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
923 continue;
924 }
925 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
926 SCTP_IPI_ADDR_RUNLOCK();
927 return (1);
928 }
929 }
930 break;
931#endif
932 default:
933 /* TSNH */
934 break;
935 }
936 }
937 }
938 } else {
939 struct sctp_laddr *laddr;
940
941 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list, sctp_nxt_addr) {
942 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
943 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
944 continue;
945 }
946 if (sctp_is_addr_restricted(stcb, laddr->ifa) &&
947 (!sctp_is_addr_pending(stcb, laddr->ifa))) {
948 /*
949 * We allow pending addresses, where we have
950 * sent an asconf-add to be considered
951 * valid.
952 */
953 continue;
954 }
955 if (laddr->ifa->address.sa.sa_family != to->sa_family) {
956 continue;
957 }
958 switch (to->sa_family) {
959#ifdef INET
960 case AF_INET:
961 {
962 struct sockaddr_in *sin, *rsin;
963
964 sin = &laddr->ifa->address.sin;
965 rsin = (struct sockaddr_in *)to;
966 if (sin->sin_addr.s_addr == rsin->sin_addr.s_addr) {
967 SCTP_IPI_ADDR_RUNLOCK();
968 return (1);
969 }
970 break;
971 }
972#endif
973#ifdef INET6
974 case AF_INET6:
975 {
976 struct sockaddr_in6 *sin6, *rsin6;
977
978 sin6 = &laddr->ifa->address.sin6;
979 rsin6 = (struct sockaddr_in6 *)to;
980 if (SCTP6_ARE_ADDR_EQUAL(sin6, rsin6)) {
981 SCTP_IPI_ADDR_RUNLOCK();
982 return (1);
983 }
984 break;
985 }
986
987#endif
988 default:
989 /* TSNH */
990 break;
991 }
992 }
993 }
994 SCTP_IPI_ADDR_RUNLOCK();
995 return (0);
996}
997
998static struct sctp_tcb *
999sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from,
1000 struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id)
1001{
1002 /**** ASSUMES THE CALLER holds the INP_INFO_RLOCK */
1003 /*
1004 * If we support the TCP model, then we must now dig through to see
1005 * if we can find our endpoint in the list of tcp ep's.
1006 */
1007 uint16_t lport, rport;
1008 struct sctppcbhead *ephead;
1009 struct sctp_inpcb *inp;
1010 struct sctp_laddr *laddr;
1011 struct sctp_tcb *stcb;
1012 struct sctp_nets *net;
1013
1014 if ((to == NULL) || (from == NULL)) {
1015 return (NULL);
1016 }
1017
1018 switch (to->sa_family) {
1019#ifdef INET
1020 case AF_INET:
1021 if (from->sa_family == AF_INET) {
1022 lport = ((struct sockaddr_in *)to)->sin_port;
1023 rport = ((struct sockaddr_in *)from)->sin_port;
1024 } else {
1025 return (NULL);
1026 }
1027 break;
1028#endif
1029#ifdef INET6
1030 case AF_INET6:
1031 if (from->sa_family == AF_INET6) {
1032 lport = ((struct sockaddr_in6 *)to)->sin6_port;
1033 rport = ((struct sockaddr_in6 *)from)->sin6_port;
1034 } else {
1035 return (NULL);
1036 }
1037 break;
1038#endif
1039 default:
1040 return (NULL);
1041 }
1042 ephead = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
1043 /*
1044 * Ok now for each of the guys in this bucket we must look and see:
1045 * - Does the remote port match. - Does there single association's
1046 * addresses match this address (to). If so we update p_ep to point
1047 * to this ep and return the tcb from it.
1048 */
1049 LIST_FOREACH(inp, ephead, sctp_hash) {
1050 SCTP_INP_RLOCK(inp);
1051 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1052 SCTP_INP_RUNLOCK(inp);
1053 continue;
1054 }
1055 if (lport != inp->sctp_lport) {
1056 SCTP_INP_RUNLOCK(inp);
1057 continue;
1058 }
1059 switch (to->sa_family) {
1060#ifdef INET
1061 case AF_INET:
1062 {
1063 struct sockaddr_in *sin;
1064
1065 sin = (struct sockaddr_in *)to;
1066 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
1067 &sin->sin_addr) != 0) {
1068 SCTP_INP_RUNLOCK(inp);
1069 continue;
1070 }
1071 break;
1072 }
1073#endif
1074#ifdef INET6
1075 case AF_INET6:
1076 {
1077 struct sockaddr_in6 *sin6;
1078
1079 sin6 = (struct sockaddr_in6 *)to;
1080 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
1081 &sin6->sin6_addr) != 0) {
1082 SCTP_INP_RUNLOCK(inp);
1083 continue;
1084 }
1085 break;
1086 }
1087#endif
1088 default:
1089 SCTP_INP_RUNLOCK(inp);
1090 continue;
1091 }
1092 if (inp->def_vrf_id != vrf_id) {
1093 SCTP_INP_RUNLOCK(inp);
1094 continue;
1095 }
1096 /* check to see if the ep has one of the addresses */
1097 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
1098 /* We are NOT bound all, so look further */
1099 int match = 0;
1100
1101 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1102 if (laddr->ifa == NULL) {
1103 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n", __func__);
1104 continue;
1105 }
1106 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1107 SCTPDBG(SCTP_DEBUG_PCB1, "ifa being deleted\n");
1108 continue;
1109 }
1110 if (laddr->ifa->address.sa.sa_family ==
1111 to->sa_family) {
1112 /* see if it matches */
1113#ifdef INET
1114 if (from->sa_family == AF_INET) {
1115 struct sockaddr_in *intf_addr,
1116 *sin;
1117
1118 intf_addr = &laddr->ifa->address.sin;
1119 sin = (struct sockaddr_in *)to;
1120 if (sin->sin_addr.s_addr ==
1121 intf_addr->sin_addr.s_addr) {
1122 match = 1;
1123 break;
1124 }
1125 }
1126#endif
1127#ifdef INET6
1128 if (from->sa_family == AF_INET6) {
1129 struct sockaddr_in6 *intf_addr6;
1130 struct sockaddr_in6 *sin6;
1131
1132 sin6 = (struct sockaddr_in6 *)
1133 to;
1134 intf_addr6 = &laddr->ifa->address.sin6;
1135
1136 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1137 intf_addr6)) {
1138 match = 1;
1139 break;
1140 }
1141 }
1142#endif
1143 }
1144 }
1145 if (match == 0) {
1146 /* This endpoint does not have this address */
1147 SCTP_INP_RUNLOCK(inp);
1148 continue;
1149 }
1150 }
1151 /*
1152 * Ok if we hit here the ep has the address, does it hold
1153 * the tcb?
1154 */
1155 /* XXX: Why don't we TAILQ_FOREACH through sctp_asoc_list? */
1156 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1157 if (stcb == NULL) {
1158 SCTP_INP_RUNLOCK(inp);
1159 continue;
1160 }
1161 SCTP_TCB_LOCK(stcb);
1162 if (!sctp_does_stcb_own_this_addr(stcb, to)) {
1163 SCTP_TCB_UNLOCK(stcb);
1164 SCTP_INP_RUNLOCK(inp);
1165 continue;
1166 }
1167 if (stcb->rport != rport) {
1168 /* remote port does not match. */
1169 SCTP_TCB_UNLOCK(stcb);
1170 SCTP_INP_RUNLOCK(inp);
1171 continue;
1172 }
1173 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1174 SCTP_TCB_UNLOCK(stcb);
1175 SCTP_INP_RUNLOCK(inp);
1176 continue;
1177 }
1178 if (!sctp_does_stcb_own_this_addr(stcb, to)) {
1179 SCTP_TCB_UNLOCK(stcb);
1180 SCTP_INP_RUNLOCK(inp);
1181 continue;
1182 }
1183 /* Does this TCB have a matching address? */
1184 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1185 if (net->ro._l_addr.sa.sa_family != from->sa_family) {
1186 /* not the same family, can't be a match */
1187 continue;
1188 }
1189 switch (from->sa_family) {
1190#ifdef INET
1191 case AF_INET:
1192 {
1193 struct sockaddr_in *sin, *rsin;
1194
1195 sin = (struct sockaddr_in *)&net->ro._l_addr;
1196 rsin = (struct sockaddr_in *)from;
1197 if (sin->sin_addr.s_addr ==
1198 rsin->sin_addr.s_addr) {
1199 /* found it */
1200 if (netp != NULL) {
1201 *netp = net;
1202 }
1203 /*
1204 * Update the endpoint
1205 * pointer
1206 */
1207 *inp_p = inp;
1208 SCTP_INP_RUNLOCK(inp);
1209 return (stcb);
1210 }
1211 break;
1212 }
1213#endif
1214#ifdef INET6
1215 case AF_INET6:
1216 {
1217 struct sockaddr_in6 *sin6, *rsin6;
1218
1219 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1220 rsin6 = (struct sockaddr_in6 *)from;
1221 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1222 rsin6)) {
1223 /* found it */
1224 if (netp != NULL) {
1225 *netp = net;
1226 }
1227 /*
1228 * Update the endpoint
1229 * pointer
1230 */
1231 *inp_p = inp;
1232 SCTP_INP_RUNLOCK(inp);
1233 return (stcb);
1234 }
1235 break;
1236 }
1237#endif
1238 default:
1239 /* TSNH */
1240 break;
1241 }
1242 }
1243 SCTP_TCB_UNLOCK(stcb);
1244 SCTP_INP_RUNLOCK(inp);
1245 }
1246 return (NULL);
1247}
1248
1249/*
1250 * rules for use
1251 *
1252 * 1) If I return a NULL you must decrement any INP ref cnt. 2) If I find an
1253 * stcb, both will be locked (locked_tcb and stcb) but decrement will be done
1254 * (if locked == NULL). 3) Decrement happens on return ONLY if locked ==
1255 * NULL.
1256 */
1257
1258struct sctp_tcb *
1259sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote,
1260 struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
1261{
1262 struct sctpasochead *head;
1263 struct sctp_inpcb *inp;
1264 struct sctp_tcb *stcb = NULL;
1265 struct sctp_nets *net;
1266 uint16_t rport;
1267
1268 inp = *inp_p;
1269 switch (remote->sa_family) {
1270#ifdef INET
1271 case AF_INET:
1272 rport = (((struct sockaddr_in *)remote)->sin_port);
1273 break;
1274#endif
1275#ifdef INET6
1276 case AF_INET6:
1277 rport = (((struct sockaddr_in6 *)remote)->sin6_port);
1278 break;
1279#endif
1280 default:
1281 return (NULL);
1282 }
1283 if (locked_tcb) {
1284 /*
1285 * UN-lock so we can do proper locking here this occurs when
1286 * called from load_addresses_from_init.
1287 */
1288 atomic_add_int(&locked_tcb->asoc.refcnt, 1);
1289 SCTP_TCB_UNLOCK(locked_tcb);
1290 }
1291 SCTP_INP_INFO_RLOCK();
1292 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
1293 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
1294 /*-
1295 * Now either this guy is our listener or it's the
1296 * connector. If it is the one that issued the connect, then
1297 * it's only chance is to be the first TCB in the list. If
1298 * it is the acceptor, then do the special_lookup to hash
1299 * and find the real inp.
1300 */
1301 if ((inp->sctp_socket) && SCTP_IS_LISTENING(inp)) {
1302 /* to is peer addr, from is my addr */
1303 stcb = sctp_tcb_special_locate(inp_p, remote, local,
1304 netp, inp->def_vrf_id);
1305 if ((stcb != NULL) && (locked_tcb == NULL)) {
1306 /* we have a locked tcb, lower refcount */
1307 SCTP_INP_DECR_REF(inp);
1308 }
1309 if ((locked_tcb != NULL) && (locked_tcb != stcb)) {
1310 SCTP_INP_RLOCK(locked_tcb->sctp_ep);
1311 SCTP_TCB_LOCK(locked_tcb);
1312 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1313 SCTP_INP_RUNLOCK(locked_tcb->sctp_ep);
1314 }
1315 SCTP_INP_INFO_RUNLOCK();
1316 return (stcb);
1317 } else {
1318 SCTP_INP_WLOCK(inp);
1319 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1320 goto null_return;
1321 }
1322 stcb = LIST_FIRST(&inp->sctp_asoc_list);
1323 if (stcb == NULL) {
1324 goto null_return;
1325 }
1326 SCTP_TCB_LOCK(stcb);
1327
1328 if (stcb->rport != rport) {
1329 /* remote port does not match. */
1330 SCTP_TCB_UNLOCK(stcb);
1331 goto null_return;
1332 }
1333 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1334 SCTP_TCB_UNLOCK(stcb);
1335 goto null_return;
1336 }
1337 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1338 SCTP_TCB_UNLOCK(stcb);
1339 goto null_return;
1340 }
1341 /* now look at the list of remote addresses */
1342 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1343#ifdef INVARIANTS
1344 if (net == (TAILQ_NEXT(net, sctp_next))) {
1345 panic("Corrupt net list");
1346 }
1347#endif
1348 if (net->ro._l_addr.sa.sa_family !=
1349 remote->sa_family) {
1350 /* not the same family */
1351 continue;
1352 }
1353 switch (remote->sa_family) {
1354#ifdef INET
1355 case AF_INET:
1356 {
1357 struct sockaddr_in *sin,
1358 *rsin;
1359
1360 sin = (struct sockaddr_in *)
1361 &net->ro._l_addr;
1362 rsin = (struct sockaddr_in *)remote;
1363 if (sin->sin_addr.s_addr ==
1364 rsin->sin_addr.s_addr) {
1365 /* found it */
1366 if (netp != NULL) {
1367 *netp = net;
1368 }
1369 if (locked_tcb == NULL) {
1370 SCTP_INP_DECR_REF(inp);
1371 } else if (locked_tcb != stcb) {
1372 SCTP_TCB_LOCK(locked_tcb);
1373 }
1374 if (locked_tcb) {
1375 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1376 }
1377
1378 SCTP_INP_WUNLOCK(inp);
1379 SCTP_INP_INFO_RUNLOCK();
1380 return (stcb);
1381 }
1382 break;
1383 }
1384#endif
1385#ifdef INET6
1386 case AF_INET6:
1387 {
1388 struct sockaddr_in6 *sin6,
1389 *rsin6;
1390
1391 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
1392 rsin6 = (struct sockaddr_in6 *)remote;
1393 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1394 rsin6)) {
1395 /* found it */
1396 if (netp != NULL) {
1397 *netp = net;
1398 }
1399 if (locked_tcb == NULL) {
1400 SCTP_INP_DECR_REF(inp);
1401 } else if (locked_tcb != stcb) {
1402 SCTP_TCB_LOCK(locked_tcb);
1403 }
1404 if (locked_tcb) {
1405 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1406 }
1407 SCTP_INP_WUNLOCK(inp);
1408 SCTP_INP_INFO_RUNLOCK();
1409 return (stcb);
1410 }
1411 break;
1412 }
1413#endif
1414 default:
1415 /* TSNH */
1416 break;
1417 }
1418 }
1419 SCTP_TCB_UNLOCK(stcb);
1420 }
1421 } else {
1422 SCTP_INP_WLOCK(inp);
1423 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1424 goto null_return;
1425 }
1426 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(rport,
1427 inp->sctp_hashmark)];
1428 LIST_FOREACH(stcb, head, sctp_tcbhash) {
1429 if (stcb->rport != rport) {
1430 /* remote port does not match */
1431 continue;
1432 }
1433 SCTP_TCB_LOCK(stcb);
1434 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1435 SCTP_TCB_UNLOCK(stcb);
1436 continue;
1437 }
1438 if (local && !sctp_does_stcb_own_this_addr(stcb, local)) {
1439 SCTP_TCB_UNLOCK(stcb);
1440 continue;
1441 }
1442 /* now look at the list of remote addresses */
1443 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
1444#ifdef INVARIANTS
1445 if (net == (TAILQ_NEXT(net, sctp_next))) {
1446 panic("Corrupt net list");
1447 }
1448#endif
1449 if (net->ro._l_addr.sa.sa_family !=
1450 remote->sa_family) {
1451 /* not the same family */
1452 continue;
1453 }
1454 switch (remote->sa_family) {
1455#ifdef INET
1456 case AF_INET:
1457 {
1458 struct sockaddr_in *sin,
1459 *rsin;
1460
1461 sin = (struct sockaddr_in *)
1462 &net->ro._l_addr;
1463 rsin = (struct sockaddr_in *)remote;
1464 if (sin->sin_addr.s_addr ==
1465 rsin->sin_addr.s_addr) {
1466 /* found it */
1467 if (netp != NULL) {
1468 *netp = net;
1469 }
1470 if (locked_tcb == NULL) {
1471 SCTP_INP_DECR_REF(inp);
1472 } else if (locked_tcb != stcb) {
1473 SCTP_TCB_LOCK(locked_tcb);
1474 }
1475 if (locked_tcb) {
1476 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1477 }
1478 SCTP_INP_WUNLOCK(inp);
1479 SCTP_INP_INFO_RUNLOCK();
1480 return (stcb);
1481 }
1482 break;
1483 }
1484#endif
1485#ifdef INET6
1486 case AF_INET6:
1487 {
1488 struct sockaddr_in6 *sin6,
1489 *rsin6;
1490
1491 sin6 = (struct sockaddr_in6 *)
1492 &net->ro._l_addr;
1493 rsin6 = (struct sockaddr_in6 *)remote;
1494 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1495 rsin6)) {
1496 /* found it */
1497 if (netp != NULL) {
1498 *netp = net;
1499 }
1500 if (locked_tcb == NULL) {
1501 SCTP_INP_DECR_REF(inp);
1502 } else if (locked_tcb != stcb) {
1503 SCTP_TCB_LOCK(locked_tcb);
1504 }
1505 if (locked_tcb) {
1506 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1507 }
1508 SCTP_INP_WUNLOCK(inp);
1509 SCTP_INP_INFO_RUNLOCK();
1510 return (stcb);
1511 }
1512 break;
1513 }
1514#endif
1515 default:
1516 /* TSNH */
1517 break;
1518 }
1519 }
1520 SCTP_TCB_UNLOCK(stcb);
1521 }
1522 }
1523null_return:
1524 /* clean up for returning null */
1525 if (locked_tcb) {
1526 SCTP_TCB_LOCK(locked_tcb);
1527 atomic_subtract_int(&locked_tcb->asoc.refcnt, 1);
1528 }
1529 SCTP_INP_WUNLOCK(inp);
1530 SCTP_INP_INFO_RUNLOCK();
1531 /* not found */
1532 return (NULL);
1533}
1534
1535/*
1536 * Find an association for a specific endpoint using the association id given
1537 * out in the COMM_UP notification
1538 */
1539struct sctp_tcb *
1540sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1541{
1542 /*
1543 * Use my the assoc_id to find a endpoint
1544 */
1545 struct sctpasochead *head;
1546 struct sctp_tcb *stcb;
1547 uint32_t id;
1548
1549 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1550 SCTP_PRINTF("TSNH ep_associd0\n");
1551 return (NULL);
1552 }
1553 id = (uint32_t)asoc_id;
1554 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
1555 if (head == NULL) {
1556 /* invalid id TSNH */
1557 SCTP_PRINTF("TSNH ep_associd1\n");
1558 return (NULL);
1559 }
1560 LIST_FOREACH(stcb, head, sctp_tcbasocidhash) {
1561 if (stcb->asoc.assoc_id == id) {
1562 if (inp != stcb->sctp_ep) {
1563 /*
1564 * some other guy has the same id active (id
1565 * collision ??).
1566 */
1567 SCTP_PRINTF("TSNH ep_associd2\n");
1568 continue;
1569 }
1570 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
1571 continue;
1572 }
1573 if (want_lock) {
1574 SCTP_TCB_LOCK(stcb);
1575 }
1576 return (stcb);
1577 }
1578 }
1579 return (NULL);
1580}
1581
1582struct sctp_tcb *
1583sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
1584{
1585 struct sctp_tcb *stcb;
1586
1587 SCTP_INP_RLOCK(inp);
1588 stcb = sctp_findasoc_ep_asocid_locked(inp, asoc_id, want_lock);
1589 SCTP_INP_RUNLOCK(inp);
1590 return (stcb);
1591}
1592
1593/*
1594 * Endpoint probe expects that the INP_INFO is locked.
1595 */
1596static struct sctp_inpcb *
1597sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head,
1598 uint16_t lport, uint32_t vrf_id)
1599{
1600 struct sctp_inpcb *inp;
1601 struct sctp_laddr *laddr;
1602#ifdef INET
1603 struct sockaddr_in *sin;
1604#endif
1605#ifdef INET6
1606 struct sockaddr_in6 *sin6;
1607 struct sockaddr_in6 *intf_addr6;
1608#endif
1609 int fnd;
1610
1611#ifdef INET
1612 sin = NULL;
1613#endif
1614#ifdef INET6
1615 sin6 = NULL;
1616#endif
1617 switch (nam->sa_family) {
1618#ifdef INET
1619 case AF_INET:
1620 sin = (struct sockaddr_in *)nam;
1621 break;
1622#endif
1623#ifdef INET6
1624 case AF_INET6:
1625 sin6 = (struct sockaddr_in6 *)nam;
1626 break;
1627#endif
1628 default:
1629 /* unsupported family */
1630 return (NULL);
1631 }
1632
1633 if (head == NULL)
1634 return (NULL);
1635
1636 LIST_FOREACH(inp, head, sctp_hash) {
1637 SCTP_INP_RLOCK(inp);
1638 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1639 SCTP_INP_RUNLOCK(inp);
1640 continue;
1641 }
1642 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) &&
1643 (inp->sctp_lport == lport)) {
1644 /* got it */
1645 switch (nam->sa_family) {
1646#ifdef INET
1647 case AF_INET:
1648 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1649 SCTP_IPV6_V6ONLY(inp)) {
1650 /*
1651 * IPv4 on a IPv6 socket with ONLY
1652 * IPv6 set
1653 */
1654 SCTP_INP_RUNLOCK(inp);
1655 continue;
1656 }
1657 if (prison_check_ip4(inp->ip_inp.inp.inp_cred,
1658 &sin->sin_addr) != 0) {
1659 SCTP_INP_RUNLOCK(inp);
1660 continue;
1661 }
1662 break;
1663#endif
1664#ifdef INET6
1665 case AF_INET6:
1666 /*
1667 * A V6 address and the endpoint is NOT
1668 * bound V6
1669 */
1670 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
1671 SCTP_INP_RUNLOCK(inp);
1672 continue;
1673 }
1674 if (prison_check_ip6(inp->ip_inp.inp.inp_cred,
1675 &sin6->sin6_addr) != 0) {
1676 SCTP_INP_RUNLOCK(inp);
1677 continue;
1678 }
1679 break;
1680#endif
1681 default:
1682 break;
1683 }
1684 /* does a VRF id match? */
1685 fnd = 0;
1686 if (inp->def_vrf_id == vrf_id)
1687 fnd = 1;
1688
1689 SCTP_INP_RUNLOCK(inp);
1690 if (!fnd)
1691 continue;
1692 return (inp);
1693 }
1694 SCTP_INP_RUNLOCK(inp);
1695 }
1696 switch (nam->sa_family) {
1697#ifdef INET
1698 case AF_INET:
1699 if (sin->sin_addr.s_addr == INADDR_ANY) {
1700 /* Can't hunt for one that has no address specified */
1701 return (NULL);
1702 }
1703 break;
1704#endif
1705#ifdef INET6
1706 case AF_INET6:
1707 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
1708 /* Can't hunt for one that has no address specified */
1709 return (NULL);
1710 }
1711 break;
1712#endif
1713 default:
1714 break;
1715 }
1716 /*
1717 * ok, not bound to all so see if we can find a EP bound to this
1718 * address.
1719 */
1720 LIST_FOREACH(inp, head, sctp_hash) {
1721 SCTP_INP_RLOCK(inp);
1722 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1723 SCTP_INP_RUNLOCK(inp);
1724 continue;
1725 }
1726 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL)) {
1727 SCTP_INP_RUNLOCK(inp);
1728 continue;
1729 }
1730 /*
1731 * Ok this could be a likely candidate, look at all of its
1732 * addresses
1733 */
1734 if (inp->sctp_lport != lport) {
1735 SCTP_INP_RUNLOCK(inp);
1736 continue;
1737 }
1738 /* does a VRF id match? */
1739 fnd = 0;
1740 if (inp->def_vrf_id == vrf_id)
1741 fnd = 1;
1742
1743 if (!fnd) {
1744 SCTP_INP_RUNLOCK(inp);
1745 continue;
1746 }
1747 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
1748 if (laddr->ifa == NULL) {
1749 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
1750 __func__);
1751 continue;
1752 }
1753 SCTPDBG(SCTP_DEBUG_PCB1, "Ok laddr->ifa:%p is possible, ",
1754 (void *)laddr->ifa);
1755 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
1756 SCTPDBG(SCTP_DEBUG_PCB1, "Huh IFA being deleted\n");
1757 continue;
1758 }
1759 if (laddr->ifa->address.sa.sa_family == nam->sa_family) {
1760 /* possible, see if it matches */
1761 switch (nam->sa_family) {
1762#ifdef INET
1763 case AF_INET:
1764 if (sin->sin_addr.s_addr ==
1765 laddr->ifa->address.sin.sin_addr.s_addr) {
1766 SCTP_INP_RUNLOCK(inp);
1767 return (inp);
1768 }
1769 break;
1770#endif
1771#ifdef INET6
1772 case AF_INET6:
1773 intf_addr6 = &laddr->ifa->address.sin6;
1774 if (SCTP6_ARE_ADDR_EQUAL(sin6,
1775 intf_addr6)) {
1776 SCTP_INP_RUNLOCK(inp);
1777 return (inp);
1778 }
1779 break;
1780#endif
1781 }
1782 }
1783 }
1784 SCTP_INP_RUNLOCK(inp);
1785 }
1786 return (NULL);
1787}
1788
1789static struct sctp_inpcb *
1790sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
1791{
1792 struct sctppcbhead *head;
1793 struct sctp_inpcb *t_inp;
1794 int fnd;
1795
1796 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1797 SCTP_BASE_INFO(hashmark))];
1798 LIST_FOREACH(t_inp, head, sctp_hash) {
1799 if (t_inp->sctp_lport != lport) {
1800 continue;
1801 }
1802 /* is it in the VRF in question */
1803 fnd = 0;
1804 if (t_inp->def_vrf_id == vrf_id)
1805 fnd = 1;
1806 if (!fnd)
1807 continue;
1808
1809 /* This one is in use. */
1810 /* check the v6/v4 binding issue */
1811 if ((t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1812 SCTP_IPV6_V6ONLY(t_inp)) {
1813 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1814 /* collision in V6 space */
1815 return (t_inp);
1816 } else {
1817 /* inp is BOUND_V4 no conflict */
1818 continue;
1819 }
1820 } else if (t_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1821 /* t_inp is bound v4 and v6, conflict always */
1822 return (t_inp);
1823 } else {
1824 /* t_inp is bound only V4 */
1825 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
1826 SCTP_IPV6_V6ONLY(inp)) {
1827 /* no conflict */
1828 continue;
1829 }
1830 /* else fall through to conflict */
1831 }
1832 return (t_inp);
1833 }
1834 return (NULL);
1835}
1836
1837int
1838sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
1839{
1840 /* For 1-2-1 with port reuse */
1841 struct sctppcbhead *head;
1842 struct sctp_inpcb *tinp, *ninp;
1843
1844 SCTP_INP_INFO_WLOCK_ASSERT();
1845 SCTP_INP_WLOCK_ASSERT(inp);
1846
1847 if (sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) {
1848 /* only works with port reuse on */
1849 return (-1);
1850 }
1851 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) == 0) {
1852 return (0);
1853 }
1854 SCTP_INP_WUNLOCK(inp);
1855 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport,
1856 SCTP_BASE_INFO(hashmark))];
1857 /* Kick out all non-listeners to the TCP hash */
1858 LIST_FOREACH_SAFE(tinp, head, sctp_hash, ninp) {
1859 if (tinp->sctp_lport != inp->sctp_lport) {
1860 continue;
1861 }
1862 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
1863 continue;
1864 }
1865 if (tinp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
1866 continue;
1867 }
1868 if (SCTP_IS_LISTENING(tinp)) {
1869 continue;
1870 }
1871 SCTP_INP_WLOCK(tinp);
1872 LIST_REMOVE(tinp, sctp_hash);
1873 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(tinp->sctp_lport, SCTP_BASE_INFO(hashtcpmark))];
1874 tinp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
1875 LIST_INSERT_HEAD(head, tinp, sctp_hash);
1876 SCTP_INP_WUNLOCK(tinp);
1877 }
1878 SCTP_INP_WLOCK(inp);
1879 /* Pull from where he was */
1880 LIST_REMOVE(inp, sctp_hash);
1881 inp->sctp_flags &= ~SCTP_PCB_FLAGS_IN_TCPPOOL;
1882 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(inp->sctp_lport, SCTP_BASE_INFO(hashmark))];
1883 LIST_INSERT_HEAD(head, inp, sctp_hash);
1884 return (0);
1885}
1886
1887struct sctp_inpcb *
1888sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock,
1889 uint32_t vrf_id)
1890{
1891 /*
1892 * First we check the hash table to see if someone has this port
1893 * bound with just the port.
1894 */
1895 struct sctp_inpcb *inp;
1896 struct sctppcbhead *head;
1897 int lport;
1898 unsigned int i;
1899#ifdef INET
1900 struct sockaddr_in *sin;
1901#endif
1902#ifdef INET6
1903 struct sockaddr_in6 *sin6;
1904#endif
1905
1906 switch (nam->sa_family) {
1907#ifdef INET
1908 case AF_INET:
1909 sin = (struct sockaddr_in *)nam;
1910 lport = sin->sin_port;
1911 break;
1912#endif
1913#ifdef INET6
1914 case AF_INET6:
1915 sin6 = (struct sockaddr_in6 *)nam;
1916 lport = sin6->sin6_port;
1917 break;
1918#endif
1919 default:
1920 return (NULL);
1921 }
1922 /*
1923 * I could cheat here and just cast to one of the types but we will
1924 * do it right. It also provides the check against an Unsupported
1925 * type too.
1926 */
1927 /* Find the head of the ALLADDR chain */
1928 if (have_lock == 0) {
1929 SCTP_INP_INFO_RLOCK();
1930 }
1931 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport,
1932 SCTP_BASE_INFO(hashmark))];
1933 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1934
1935 /*
1936 * If the TCP model exists it could be that the main listening
1937 * endpoint is gone but there still exists a connected socket for
1938 * this guy. If so we can return the first one that we find. This
1939 * may NOT be the correct one so the caller should be wary on the
1940 * returned INP. Currently the only caller that sets find_tcp_pool
1941 * is in bindx where we are verifying that a user CAN bind the
1942 * address. He either has bound it already, or someone else has, or
1943 * its open to bind, so this is good enough.
1944 */
1945 if (inp == NULL && find_tcp_pool) {
1946 for (i = 0; i < SCTP_BASE_INFO(hashtcpmark) + 1; i++) {
1947 head = &SCTP_BASE_INFO(sctp_tcpephash)[i];
1948 inp = sctp_endpoint_probe(nam, head, lport, vrf_id);
1949 if (inp) {
1950 break;
1951 }
1952 }
1953 }
1954 if (inp) {
1955 SCTP_INP_INCR_REF(inp);
1956 }
1957 if (have_lock == 0) {
1958 SCTP_INP_INFO_RUNLOCK();
1959 }
1960 return (inp);
1961}
1962
1963/*
1964 * Find an association for an endpoint with the pointer to whom you want to
1965 * send to and the endpoint pointer. The address can be IPv4 or IPv6. We may
1966 * need to change the *to to some other struct like a mbuf...
1967 */
1968struct sctp_tcb *
1969sctp_findassociation_addr_sa(struct sockaddr *from, struct sockaddr *to,
1970 struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool,
1971 uint32_t vrf_id)
1972{
1973 struct sctp_inpcb *inp = NULL;
1974 struct sctp_tcb *stcb;
1975
1976 SCTP_INP_INFO_RLOCK();
1977 if (find_tcp_pool) {
1978 if (inp_p != NULL) {
1979 stcb = sctp_tcb_special_locate(inp_p, from, to, netp,
1980 vrf_id);
1981 } else {
1982 stcb = sctp_tcb_special_locate(&inp, from, to, netp,
1983 vrf_id);
1984 }
1985 if (stcb != NULL) {
1986 SCTP_INP_INFO_RUNLOCK();
1987 return (stcb);
1988 }
1989 }
1990 inp = sctp_pcb_findep(to, 0, 1, vrf_id);
1991 if (inp_p != NULL) {
1992 *inp_p = inp;
1993 }
1994 SCTP_INP_INFO_RUNLOCK();
1995 if (inp == NULL) {
1996 return (NULL);
1997 }
1998 /*
1999 * ok, we have an endpoint, now lets find the assoc for it (if any)
2000 * we now place the source address or from in the to of the find
2001 * endpoint call. Since in reality this chain is used from the
2002 * inbound packet side.
2003 */
2004 if (inp_p != NULL) {
2005 stcb = sctp_findassociation_ep_addr(inp_p, from, netp, to,
2006 NULL);
2007 } else {
2008 stcb = sctp_findassociation_ep_addr(&inp, from, netp, to,
2009 NULL);
2010 }
2011 return (stcb);
2012}
2013
2014/*
2015 * This routine will grub through the mbuf that is a INIT or INIT-ACK and
2016 * find all addresses that the sender has specified in any address list. Each
2017 * address will be used to lookup the TCB and see if one exits.
2018 */
2019static struct sctp_tcb *
2020sctp_findassociation_special_addr(struct mbuf *m, int offset,
2021 struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp,
2022 struct sockaddr *dst)
2023{
2024 struct sctp_paramhdr *phdr, param_buf;
2025#if defined(INET) || defined(INET6)
2026 struct sctp_tcb *stcb;
2027 uint16_t ptype;
2028#endif
2029 uint16_t plen;
2030#ifdef INET
2031 struct sockaddr_in sin4;
2032#endif
2033#ifdef INET6
2034 struct sockaddr_in6 sin6;
2035#endif
2036
2037#ifdef INET
2038 memset(&sin4, 0, sizeof(sin4));
2039 sin4.sin_len = sizeof(sin4);
2040 sin4.sin_family = AF_INET;
2041 sin4.sin_port = sh->src_port;
2042#endif
2043#ifdef INET6
2044 memset(&sin6, 0, sizeof(sin6));
2045 sin6.sin6_len = sizeof(sin6);
2046 sin6.sin6_family = AF_INET6;
2047 sin6.sin6_port = sh->src_port;
2048#endif
2049
2050 offset += sizeof(struct sctp_init_chunk);
2051
2052 phdr = sctp_get_next_param(m, offset, &param_buf, sizeof(param_buf));
2053 while (phdr != NULL) {
2054 /* now we must see if we want the parameter */
2055#if defined(INET) || defined(INET6)
2056 ptype = ntohs(phdr->param_type);
2057#endif
2058 plen = ntohs(phdr->param_length);
2059 if (plen == 0) {
2060 break;
2061 }
2062#ifdef INET
2063 if (ptype == SCTP_IPV4_ADDRESS &&
2064 plen == sizeof(struct sctp_ipv4addr_param)) {
2065 /* Get the rest of the address */
2066 struct sctp_ipv4addr_param ip4_param, *p4;
2067
2068 phdr = sctp_get_next_param(m, offset,
2069 (struct sctp_paramhdr *)&ip4_param, sizeof(ip4_param));
2070 if (phdr == NULL) {
2071 return (NULL);
2072 }
2073 p4 = (struct sctp_ipv4addr_param *)phdr;
2074 memcpy(&sin4.sin_addr, &p4->addr, sizeof(p4->addr));
2075 /* look it up */
2076 stcb = sctp_findassociation_ep_addr(inp_p,
2077 (struct sockaddr *)&sin4, netp, dst, NULL);
2078 if (stcb != NULL) {
2079 return (stcb);
2080 }
2081 }
2082#endif
2083#ifdef INET6
2084 if (ptype == SCTP_IPV6_ADDRESS &&
2085 plen == sizeof(struct sctp_ipv6addr_param)) {
2086 /* Get the rest of the address */
2087 struct sctp_ipv6addr_param ip6_param, *p6;
2088
2089 phdr = sctp_get_next_param(m, offset,
2090 (struct sctp_paramhdr *)&ip6_param, sizeof(ip6_param));
2091 if (phdr == NULL) {
2092 return (NULL);
2093 }
2094 p6 = (struct sctp_ipv6addr_param *)phdr;
2095 memcpy(&sin6.sin6_addr, &p6->addr, sizeof(p6->addr));
2096 /* look it up */
2097 stcb = sctp_findassociation_ep_addr(inp_p,
2098 (struct sockaddr *)&sin6, netp, dst, NULL);
2099 if (stcb != NULL) {
2100 return (stcb);
2101 }
2102 }
2103#endif
2104 offset += SCTP_SIZE32(plen);
2105 phdr = sctp_get_next_param(m, offset, &param_buf,
2106 sizeof(param_buf));
2107 }
2108 return (NULL);
2109}
2110
2111static struct sctp_tcb *
2112sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag,
2113 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport,
2114 uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
2115{
2116 /*
2117 * Use my vtag to hash. If we find it we then verify the source addr
2118 * is in the assoc. If all goes well we save a bit on rec of a
2119 * packet.
2120 */
2121 struct sctpasochead *head;
2122 struct sctp_nets *net;
2123 struct sctp_tcb *stcb;
2124
2125 SCTP_INP_INFO_RLOCK();
2126 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(vtag,
2127 SCTP_BASE_INFO(hashasocmark))];
2128 LIST_FOREACH(stcb, head, sctp_asocs) {
2129 SCTP_INP_RLOCK(stcb->sctp_ep);
2130 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
2131 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2132 continue;
2133 }
2134 if (stcb->sctp_ep->def_vrf_id != vrf_id) {
2135 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2136 continue;
2137 }
2138 SCTP_TCB_LOCK(stcb);
2139 SCTP_INP_RUNLOCK(stcb->sctp_ep);
2140 if (stcb->asoc.my_vtag == vtag) {
2141 /* candidate */
2142 if (stcb->rport != rport) {
2143 SCTP_TCB_UNLOCK(stcb);
2144 continue;
2145 }
2146 if (stcb->sctp_ep->sctp_lport != lport) {
2147 SCTP_TCB_UNLOCK(stcb);
2148 continue;
2149 }
2150 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
2151 SCTP_TCB_UNLOCK(stcb);
2152 continue;
2153 }
2154 /* RRS:Need toaddr check here */
2155 if (sctp_does_stcb_own_this_addr(stcb, to) == 0) {
2156 /* Endpoint does not own this address */
2157 SCTP_TCB_UNLOCK(stcb);
2158 continue;
2159 }
2160 if (remote_tag) {
2161 /*
2162 * If we have both vtags that's all we match
2163 * on
2164 */
2165 if (stcb->asoc.peer_vtag == remote_tag) {
2166 /*
2167 * If both tags match we consider it
2168 * conclusive and check NO
2169 * source/destination addresses
2170 */
2171 goto conclusive;
2172 }
2173 }
2174 if (skip_src_check) {
2175 conclusive:
2176 if (from) {
2177 *netp = sctp_findnet(stcb, from);
2178 } else {
2179 *netp = NULL; /* unknown */
2180 }
2181 if (inp_p)
2182 *inp_p = stcb->sctp_ep;
2183 SCTP_INP_INFO_RUNLOCK();
2184 return (stcb);
2185 }
2186 net = sctp_findnet(stcb, from);
2187 if (net) {
2188 /* yep its him. */
2189 *netp = net;
2190 SCTP_STAT_INCR(sctps_vtagexpress);
2191 *inp_p = stcb->sctp_ep;
2192 SCTP_INP_INFO_RUNLOCK();
2193 return (stcb);
2194 } else {
2195 /*
2196 * not him, this should only happen in rare
2197 * cases so I peg it.
2198 */
2199 SCTP_STAT_INCR(sctps_vtagbogus);
2200 }
2201 }
2202 SCTP_TCB_UNLOCK(stcb);
2203 }
2204 SCTP_INP_INFO_RUNLOCK();
2205 return (NULL);
2206}
2207
2208/*
2209 * Find an association with the pointer to the inbound IP packet. This can be
2210 * a IPv4 or IPv6 packet.
2211 */
2212struct sctp_tcb *
2213sctp_findassociation_addr(struct mbuf *m, int offset,
2214 struct sockaddr *src, struct sockaddr *dst,
2215 struct sctphdr *sh, struct sctp_chunkhdr *ch,
2216 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2217{
2218 struct sctp_tcb *stcb;
2219 struct sctp_inpcb *inp;
2220
2221 if (sh->v_tag) {
2222 /* we only go down this path if vtag is non-zero */
2223 stcb = sctp_findassoc_by_vtag(src, dst, ntohl(sh->v_tag),
2224 inp_p, netp, sh->src_port, sh->dest_port, 0, vrf_id, 0);
2225 if (stcb) {
2226 return (stcb);
2227 }
2228 }
2229
2230 if (inp_p) {
2231 stcb = sctp_findassociation_addr_sa(src, dst, inp_p, netp,
2232 1, vrf_id);
2233 inp = *inp_p;
2234 } else {
2235 stcb = sctp_findassociation_addr_sa(src, dst, &inp, netp,
2236 1, vrf_id);
2237 }
2238 SCTPDBG(SCTP_DEBUG_PCB1, "stcb:%p inp:%p\n", (void *)stcb, (void *)inp);
2239 if (stcb == NULL && inp) {
2240 /* Found a EP but not this address */
2241 if ((ch->chunk_type == SCTP_INITIATION) ||
2242 (ch->chunk_type == SCTP_INITIATION_ACK)) {
2243 /*-
2244 * special hook, we do NOT return linp or an
2245 * association that is linked to an existing
2246 * association that is under the TCP pool (i.e. no
2247 * listener exists). The endpoint finding routine
2248 * will always find a listener before examining the
2249 * TCP pool.
2250 */
2251 if (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) {
2252 if (inp_p) {
2253 *inp_p = NULL;
2254 }
2255 return (NULL);
2256 }
2257 stcb = sctp_findassociation_special_addr(m,
2258 offset, sh, &inp, netp, dst);
2259 if (inp_p != NULL) {
2260 *inp_p = inp;
2261 }
2262 }
2263 }
2264 SCTPDBG(SCTP_DEBUG_PCB1, "stcb is %p\n", (void *)stcb);
2265 return (stcb);
2266}
2267
2268/*
2269 * lookup an association by an ASCONF lookup address.
2270 * if the lookup address is 0.0.0.0 or ::0, use the vtag to do the lookup
2271 */
2272struct sctp_tcb *
2273sctp_findassociation_ep_asconf(struct mbuf *m, int offset,
2274 struct sockaddr *dst, struct sctphdr *sh,
2275 struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
2276{
2277 struct sctp_tcb *stcb;
2278 union sctp_sockstore remote_store;
2279 struct sctp_paramhdr param_buf, *phdr;
2280 int ptype;
2281 int zero_address = 0;
2282#ifdef INET
2283 struct sockaddr_in *sin;
2284#endif
2285#ifdef INET6
2286 struct sockaddr_in6 *sin6;
2287#endif
2288
2289 memset(&remote_store, 0, sizeof(remote_store));
2290 phdr = sctp_get_next_param(m, offset + sizeof(struct sctp_asconf_chunk),
2291 &param_buf, sizeof(struct sctp_paramhdr));
2292 if (phdr == NULL) {
2293 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf lookup addr\n",
2294 __func__);
2295 return NULL;
2296 }
2297 ptype = (int)((uint32_t)ntohs(phdr->param_type));
2298 /* get the correlation address */
2299 switch (ptype) {
2300#ifdef INET6
2301 case SCTP_IPV6_ADDRESS:
2302 {
2303 /* ipv6 address param */
2304 struct sctp_ipv6addr_param *p6, p6_buf;
2305
2306 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv6addr_param)) {
2307 return NULL;
2308 }
2309 p6 = (struct sctp_ipv6addr_param *)sctp_get_next_param(m,
2310 offset + sizeof(struct sctp_asconf_chunk),
2311 &p6_buf.ph, sizeof(p6_buf));
2312 if (p6 == NULL) {
2313 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v6 lookup addr\n",
2314 __func__);
2315 return (NULL);
2316 }
2317 sin6 = &remote_store.sin6;
2318 sin6->sin6_family = AF_INET6;
2319 sin6->sin6_len = sizeof(*sin6);
2320 sin6->sin6_port = sh->src_port;
2321 memcpy(&sin6->sin6_addr, &p6->addr, sizeof(struct in6_addr));
2322 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
2323 zero_address = 1;
2324 break;
2325 }
2326#endif
2327#ifdef INET
2328 case SCTP_IPV4_ADDRESS:
2329 {
2330 /* ipv4 address param */
2331 struct sctp_ipv4addr_param *p4, p4_buf;
2332
2333 if (ntohs(phdr->param_length) != sizeof(struct sctp_ipv4addr_param)) {
2334 return NULL;
2335 }
2336 p4 = (struct sctp_ipv4addr_param *)sctp_get_next_param(m,
2337 offset + sizeof(struct sctp_asconf_chunk),
2338 &p4_buf.ph, sizeof(p4_buf));
2339 if (p4 == NULL) {
2340 SCTPDBG(SCTP_DEBUG_INPUT3, "%s: failed to get asconf v4 lookup addr\n",
2341 __func__);
2342 return (NULL);
2343 }
2344 sin = &remote_store.sin;
2345 sin->sin_family = AF_INET;
2346 sin->sin_len = sizeof(*sin);
2347 sin->sin_port = sh->src_port;
2348 memcpy(&sin->sin_addr, &p4->addr, sizeof(struct in_addr));
2349 if (sin->sin_addr.s_addr == INADDR_ANY)
2350 zero_address = 1;
2351 break;
2352 }
2353#endif
2354 default:
2355 /* invalid address param type */
2356 return NULL;
2357 }
2358
2359 if (zero_address) {
2360 stcb = sctp_findassoc_by_vtag(NULL, dst, ntohl(sh->v_tag), inp_p,
2361 netp, sh->src_port, sh->dest_port, 1, vrf_id, 0);
2362 if (stcb != NULL) {
2363 SCTP_INP_DECR_REF(*inp_p);
2364 }
2365 } else {
2366 stcb = sctp_findassociation_ep_addr(inp_p,
2367 &remote_store.sa, netp,
2368 dst, NULL);
2369 }
2370 return (stcb);
2371}
2372
2373/*
2374 * allocate a sctp_inpcb and setup a temporary binding to a port/all
2375 * addresses. This way if we don't get a bind we by default pick a ephemeral
2376 * port with all addresses bound.
2377 */
2378int
2379sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
2380{
2381 /*
2382 * we get called when a new endpoint starts up. We need to allocate
2383 * the sctp_inpcb structure from the zone and init it. Mark it as
2384 * unbound and find a port that we can use as an ephemeral with
2385 * INADDR_ANY. If the user binds later no problem we can then add in
2386 * the specific addresses. And setup the default parameters for the
2387 * EP.
2388 */
2389 int i, error;
2390 struct sctp_inpcb *inp;
2391 struct sctp_pcb *m;
2392 struct timeval time;
2393 sctp_sharedkey_t *null_key;
2394
2395 error = 0;
2396
2397 SCTP_INP_INFO_WLOCK();
2398 inp = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_ep), struct sctp_inpcb);
2399 if (inp == NULL) {
2400 SCTP_PRINTF("Out of SCTP-INPCB structures - no resources\n");
2401 SCTP_INP_INFO_WUNLOCK();
2402 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2403 return (ENOBUFS);
2404 }
2405 /* zap it */
2406 memset(inp, 0, sizeof(*inp));
2407
2408 /* bump generations */
2409 /* setup socket pointers */
2410 inp->sctp_socket = so;
2411 inp->ip_inp.inp.inp_socket = so;
2412 inp->ip_inp.inp.inp_cred = crhold(so->so_cred);
2413#ifdef INET6
2414 if (INP_SOCKAF(so) == AF_INET6) {
2415 if (MODULE_GLOBAL(ip6_auto_flowlabel)) {
2416 inp->ip_inp.inp.inp_flags |= IN6P_AUTOFLOWLABEL;
2417 }
2418 if (MODULE_GLOBAL(ip6_v6only)) {
2419 inp->ip_inp.inp.inp_flags |= IN6P_IPV6_V6ONLY;
2420 }
2421 }
2422#endif
2423 inp->sctp_associd_counter = 1;
2424 inp->partial_delivery_point = SCTP_SB_LIMIT_RCV(so) >> SCTP_PARTIAL_DELIVERY_SHIFT;
2425 inp->sctp_frag_point = 0;
2426 inp->max_cwnd = 0;
2427 inp->sctp_cmt_on_off = SCTP_BASE_SYSCTL(sctp_cmt_on_off);
2428 inp->ecn_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_ecn_enable);
2429 inp->prsctp_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_pr_enable);
2430 inp->auth_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_auth_enable);
2431 inp->asconf_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_asconf_enable);
2432 inp->reconfig_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_reconfig_enable);
2433 inp->nrsack_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_nrsack_enable);
2434 inp->pktdrop_supported = (uint8_t)SCTP_BASE_SYSCTL(sctp_pktdrop_enable);
2435 inp->idata_supported = 0;
2436
2437 inp->fibnum = so->so_fibnum;
2438 /* init the small hash table we use to track asocid <-> tcb */
2439 inp->sctp_asocidhash = SCTP_HASH_INIT(SCTP_STACK_VTAG_HASH_SIZE, &inp->hashasocidmark);
2440 if (inp->sctp_asocidhash == NULL) {
2441 crfree(inp->ip_inp.inp.inp_cred);
2442 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2443 SCTP_INP_INFO_WUNLOCK();
2444 return (ENOBUFS);
2445 }
2446 SCTP_INCR_EP_COUNT();
2447 inp->ip_inp.inp.inp_ip_ttl = MODULE_GLOBAL(ip_defttl);
2448 SCTP_INP_INFO_WUNLOCK();
2449
2450 so->so_pcb = (caddr_t)inp;
2451
2452 if (SCTP_SO_TYPE(so) == SOCK_SEQPACKET) {
2453 /* UDP style socket */
2454 inp->sctp_flags = (SCTP_PCB_FLAGS_UDPTYPE |
2455 SCTP_PCB_FLAGS_UNBOUND);
2456 /* Be sure it is NON-BLOCKING IO for UDP */
2457 /* SCTP_SET_SO_NBIO(so); */
2458 } else if (SCTP_SO_TYPE(so) == SOCK_STREAM) {
2459 /* TCP style socket */
2460 inp->sctp_flags = (SCTP_PCB_FLAGS_TCPTYPE |
2461 SCTP_PCB_FLAGS_UNBOUND);
2462 /* Be sure we have blocking IO by default */
2463 SOCK_LOCK(so);
2464 SCTP_CLEAR_SO_NBIO(so);
2465 SOCK_UNLOCK(so);
2466 } else {
2467 /*
2468 * unsupported socket type (RAW, etc)- in case we missed it
2469 * in protosw
2470 */
2471 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EOPNOTSUPP);
2472 so->so_pcb = NULL;
2473 crfree(inp->ip_inp.inp.inp_cred);
2474 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2475 return (EOPNOTSUPP);
2476 }
2477 if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_1) {
2478 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2479 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2480 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_2) {
2481 sctp_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2482 sctp_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2483 } else if (SCTP_BASE_SYSCTL(sctp_default_frag_interleave) == SCTP_FRAG_LEVEL_0) {
2484 sctp_feature_off(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE);
2485 sctp_feature_off(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS);
2486 }
2487 inp->sctp_tcbhash = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_pcbtblsize),
2488 &inp->sctp_hashmark);
2489 if (inp->sctp_tcbhash == NULL) {
2490 SCTP_PRINTF("Out of SCTP-INPCB->hashinit - no resources\n");
2491 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
2492 so->so_pcb = NULL;
2493 crfree(inp->ip_inp.inp.inp_cred);
2494 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
2495 return (ENOBUFS);
2496 }
2497 inp->def_vrf_id = vrf_id;
2498
2499 SCTP_INP_INFO_WLOCK();
2500 SCTP_INP_LOCK_INIT(inp);
2501 rw_init_flags(&inp->ip_inp.inp.inp_lock, "sctpinp",
2502 RW_RECURSE | RW_DUPOK);
2503 SCTP_INP_READ_INIT(inp);
2504 SCTP_ASOC_CREATE_LOCK_INIT(inp);
2505 /* lock the new ep */
2506 SCTP_INP_WLOCK(inp);
2507
2508 /* add it to the info area */
2509 LIST_INSERT_HEAD(&SCTP_BASE_INFO(listhead), inp, sctp_list);
2510 SCTP_INP_INFO_WUNLOCK();
2511
2512 TAILQ_INIT(&inp->read_queue);
2513 LIST_INIT(&inp->sctp_addr_list);
2514
2515 LIST_INIT(&inp->sctp_asoc_list);
2516
2517#ifdef SCTP_TRACK_FREED_ASOCS
2518 /* TEMP CODE */
2519 LIST_INIT(&inp->sctp_asoc_free_list);
2520#endif
2521 /* Init the timer structure for signature change */
2522 SCTP_OS_TIMER_INIT(&inp->sctp_ep.signature_change.timer);
2523 inp->sctp_ep.signature_change.type = SCTP_TIMER_TYPE_NEWCOOKIE;
2524
2525 /* now init the actual endpoint default data */
2526 m = &inp->sctp_ep;
2527
2528 /* setup the base timeout information */
2529 m->sctp_timeoutticks[SCTP_TIMER_SEND] = sctp_secs_to_ticks(SCTP_SEND_SEC); /* needed ? */
2530 m->sctp_timeoutticks[SCTP_TIMER_INIT] = sctp_secs_to_ticks(SCTP_INIT_SEC); /* needed ? */
2531 m->sctp_timeoutticks[SCTP_TIMER_RECV] = sctp_msecs_to_ticks(SCTP_BASE_SYSCTL(sctp_delayed_sack_time_default));
2532 m->sctp_timeoutticks[SCTP_TIMER_HEARTBEAT] = sctp_msecs_to_ticks(SCTP_BASE_SYSCTL(sctp_heartbeat_interval_default));
2533 m->sctp_timeoutticks[SCTP_TIMER_PMTU] = sctp_secs_to_ticks(SCTP_BASE_SYSCTL(sctp_pmtu_raise_time_default));
2534 m->sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] = sctp_secs_to_ticks(SCTP_BASE_SYSCTL(sctp_shutdown_guard_time_default));
2535 m->sctp_timeoutticks[SCTP_TIMER_SIGNATURE] = sctp_secs_to_ticks(SCTP_BASE_SYSCTL(sctp_secret_lifetime_default));
2536 /* all max/min max are in ms */
2537 m->sctp_maxrto = SCTP_BASE_SYSCTL(sctp_rto_max_default);
2538 m->sctp_minrto = SCTP_BASE_SYSCTL(sctp_rto_min_default);
2539 m->initial_rto = SCTP_BASE_SYSCTL(sctp_rto_initial_default);
2540 m->initial_init_rto_max = SCTP_BASE_SYSCTL(sctp_init_rto_max_default);
2541 m->sctp_sack_freq = SCTP_BASE_SYSCTL(sctp_sack_freq_default);
2542 m->max_init_times = SCTP_BASE_SYSCTL(sctp_init_rtx_max_default);
2543 m->max_send_times = SCTP_BASE_SYSCTL(sctp_assoc_rtx_max_default);
2544 m->def_net_failure = SCTP_BASE_SYSCTL(sctp_path_rtx_max_default);
2545 m->def_net_pf_threshold = SCTP_BASE_SYSCTL(sctp_path_pf_threshold);
2546 m->sctp_sws_sender = SCTP_SWS_SENDER_DEF;
2547 m->sctp_sws_receiver = SCTP_SWS_RECEIVER_DEF;
2548 m->max_burst = SCTP_BASE_SYSCTL(sctp_max_burst_default);
2549 m->fr_max_burst = SCTP_BASE_SYSCTL(sctp_fr_max_burst_default);
2550
2551 m->sctp_default_cc_module = SCTP_BASE_SYSCTL(sctp_default_cc_module);
2552 m->sctp_default_ss_module = SCTP_BASE_SYSCTL(sctp_default_ss_module);
2553 m->max_open_streams_intome = SCTP_BASE_SYSCTL(sctp_nr_incoming_streams_default);
2554 /* number of streams to pre-open on a association */
2555 m->pre_open_stream_count = SCTP_BASE_SYSCTL(sctp_nr_outgoing_streams_default);
2556
2557 m->default_mtu = 0;
2558 /* Add adaptation cookie */
2559 m->adaptation_layer_indicator = 0;
2560 m->adaptation_layer_indicator_provided = 0;
2561
2562 /* seed random number generator */
2563 m->random_counter = 1;
2564 m->store_at = SCTP_SIGNATURE_SIZE;
2565 SCTP_READ_RANDOM(m->random_numbers, sizeof(m->random_numbers));
2566 sctp_fill_random_store(m);
2567
2568 /* Minimum cookie size */
2569 m->size_of_a_cookie = (sizeof(struct sctp_init_msg) * 2) +
2570 sizeof(struct sctp_state_cookie);
2571 m->size_of_a_cookie += SCTP_SIGNATURE_SIZE;
2572
2573 /* Setup the initial secret */
2574 (void)SCTP_GETTIME_TIMEVAL(&time);
2575 m->time_of_secret_change = (unsigned int)time.tv_sec;
2576
2577 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
2578 m->secret_key[0][i] = sctp_select_initial_TSN(m);
2579 }
2580 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
2581
2582 /* How long is a cookie good for ? */
2583 m->def_cookie_life = sctp_msecs_to_ticks(SCTP_BASE_SYSCTL(sctp_valid_cookie_life_default));
2584 /*
2585 * Initialize authentication parameters
2586 */
2587 m->local_hmacs = sctp_default_supported_hmaclist();
2588 m->local_auth_chunks = sctp_alloc_chunklist();
2589 if (inp->asconf_supported) {
2590 sctp_auth_add_chunk(SCTP_ASCONF, m->local_auth_chunks);
2591 sctp_auth_add_chunk(SCTP_ASCONF_ACK, m->local_auth_chunks);
2592 }
2593 m->default_dscp = 0;
2594#ifdef INET6
2595 m->default_flowlabel = 0;
2596#endif
2597 m->port = 0; /* encapsulation disabled by default */
2598 LIST_INIT(&m->shared_keys);
2599 /* add default NULL key as key id 0 */
2600 null_key = sctp_alloc_sharedkey();
2601 sctp_insert_sharedkey(&m->shared_keys, null_key);
2602 SCTP_INP_WUNLOCK(inp);
2603#ifdef SCTP_LOG_CLOSING
2604 sctp_log_closing(inp, NULL, 12);
2605#endif
2606 return (error);
2607}
2608
2609void
2610sctp_move_pcb_and_assoc(struct sctp_inpcb *old_inp, struct sctp_inpcb *new_inp,
2611 struct sctp_tcb *stcb)
2612{
2613 struct sctp_nets *net;
2614 uint16_t lport, rport;
2615 struct sctppcbhead *head;
2616 struct sctp_laddr *laddr, *oladdr;
2617
2618 atomic_add_int(&stcb->asoc.refcnt, 1);
2619 SCTP_TCB_UNLOCK(stcb);
2620 SCTP_INP_INFO_WLOCK();
2621 SCTP_INP_WLOCK(old_inp);
2622 SCTP_INP_WLOCK(new_inp);
2623 SCTP_TCB_LOCK(stcb);
2624 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2625
2626#ifdef INET6
2627 if (old_inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2628 new_inp->ip_inp.inp.inp_flags |= old_inp->ip_inp.inp.inp_flags & INP_CONTROLOPTS;
2629 if (old_inp->ip_inp.inp.in6p_outputopts) {
2630 new_inp->ip_inp.inp.in6p_outputopts = ip6_copypktopts(old_inp->ip_inp.inp.in6p_outputopts, M_NOWAIT);
2631 }
2632 }
2633#endif
2634#if defined(INET) && defined(INET6)
2635 else
2636#endif
2637#ifdef INET
2638 {
2639 new_inp->ip_inp.inp.inp_ip_tos = old_inp->ip_inp.inp.inp_ip_tos;
2640 new_inp->ip_inp.inp.inp_ip_ttl = old_inp->ip_inp.inp.inp_ip_ttl;
2641 }
2642#endif
2643 new_inp->sctp_ep.time_of_secret_change =
2644 old_inp->sctp_ep.time_of_secret_change;
2645 memcpy(new_inp->sctp_ep.secret_key, old_inp->sctp_ep.secret_key,
2646 sizeof(old_inp->sctp_ep.secret_key));
2647 new_inp->sctp_ep.current_secret_number =
2648 old_inp->sctp_ep.current_secret_number;
2649 new_inp->sctp_ep.last_secret_number =
2650 old_inp->sctp_ep.last_secret_number;
2651 new_inp->sctp_ep.size_of_a_cookie = old_inp->sctp_ep.size_of_a_cookie;
2652
2653 /* make it so new data pours into the new socket */
2654 stcb->sctp_socket = new_inp->sctp_socket;
2655 stcb->sctp_ep = new_inp;
2656
2657 /* Copy the port across */
2658 lport = new_inp->sctp_lport = old_inp->sctp_lport;
2659 rport = stcb->rport;
2660 /* Pull the tcb from the old association */
2661 LIST_REMOVE(stcb, sctp_tcbhash);
2662 LIST_REMOVE(stcb, sctp_tcblist);
2663 if (stcb->asoc.in_asocid_hash) {
2664 LIST_REMOVE(stcb, sctp_tcbasocidhash);
2665 }
2666 /* Now insert the new_inp into the TCP connected hash */
2667 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR((lport | rport), SCTP_BASE_INFO(hashtcpmark))];
2668
2669 LIST_INSERT_HEAD(head, new_inp, sctp_hash);
2670 /* Its safe to access */
2671 new_inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
2672
2673 /* Now move the tcb into the endpoint list */
2674 LIST_INSERT_HEAD(&new_inp->sctp_asoc_list, stcb, sctp_tcblist);
2675 /*
2676 * Question, do we even need to worry about the ep-hash since we
2677 * only have one connection? Probably not :> so lets get rid of it
2678 * and not suck up any kernel memory in that.
2679 */
2680 if (stcb->asoc.in_asocid_hash) {
2681 struct sctpasochead *lhd;
2682
2683 lhd = &new_inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(stcb->asoc.assoc_id,
2684 new_inp->hashasocidmark)];
2685 LIST_INSERT_HEAD(lhd, stcb, sctp_tcbasocidhash);
2686 }
2687 /* Ok. Let's restart timer. */
2688 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2689 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, new_inp,
2690 stcb, net);
2691 }
2692
2693 SCTP_INP_INFO_WUNLOCK();
2694 if (new_inp->sctp_tcbhash != NULL) {
2695 SCTP_HASH_FREE(new_inp->sctp_tcbhash, new_inp->sctp_hashmark);
2696 new_inp->sctp_tcbhash = NULL;
2697 }
2698 if ((new_inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) {
2699 /* Subset bound, so copy in the laddr list from the old_inp */
2700 LIST_FOREACH(oladdr, &old_inp->sctp_addr_list, sctp_nxt_addr) {
2701 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2702 if (laddr == NULL) {
2703 /*
2704 * Gak, what can we do? This assoc is really
2705 * HOSED. We probably should send an abort
2706 * here.
2707 */
2708 SCTPDBG(SCTP_DEBUG_PCB1, "Association hosed in TCP model, out of laddr memory\n");
2709 continue;
2710 }
2711 SCTP_INCR_LADDR_COUNT();
2712 memset(laddr, 0, sizeof(*laddr));
2713 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2714 laddr->ifa = oladdr->ifa;
2715 atomic_add_int(&laddr->ifa->refcount, 1);
2716 LIST_INSERT_HEAD(&new_inp->sctp_addr_list, laddr,
2717 sctp_nxt_addr);
2718 new_inp->laddr_count++;
2719 if (oladdr == stcb->asoc.last_used_address) {
2720 stcb->asoc.last_used_address = laddr;
2721 }
2722 }
2723 }
2724 /* Now any running timers need to be adjusted. */
2725 if (stcb->asoc.dack_timer.ep == old_inp) {
2726 SCTP_INP_DECR_REF(old_inp);
2727 stcb->asoc.dack_timer.ep = new_inp;
2728 SCTP_INP_INCR_REF(new_inp);
2729 }
2730 if (stcb->asoc.asconf_timer.ep == old_inp) {
2731 SCTP_INP_DECR_REF(old_inp);
2732 stcb->asoc.asconf_timer.ep = new_inp;
2733 SCTP_INP_INCR_REF(new_inp);
2734 }
2735 if (stcb->asoc.strreset_timer.ep == old_inp) {
2736 SCTP_INP_DECR_REF(old_inp);
2737 stcb->asoc.strreset_timer.ep = new_inp;
2738 SCTP_INP_INCR_REF(new_inp);
2739 }
2740 if (stcb->asoc.shut_guard_timer.ep == old_inp) {
2741 SCTP_INP_DECR_REF(old_inp);
2742 stcb->asoc.shut_guard_timer.ep = new_inp;
2743 SCTP_INP_INCR_REF(new_inp);
2744 }
2745 if (stcb->asoc.autoclose_timer.ep == old_inp) {
2746 SCTP_INP_DECR_REF(old_inp);
2747 stcb->asoc.autoclose_timer.ep = new_inp;
2748 SCTP_INP_INCR_REF(new_inp);
2749 }
2750 if (stcb->asoc.delete_prim_timer.ep == old_inp) {
2751 SCTP_INP_DECR_REF(old_inp);
2752 stcb->asoc.delete_prim_timer.ep = new_inp;
2753 SCTP_INP_INCR_REF(new_inp);
2754 }
2755 /* now what about the nets? */
2756 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
2757 if (net->pmtu_timer.ep == old_inp) {
2758 SCTP_INP_DECR_REF(old_inp);
2759 net->pmtu_timer.ep = new_inp;
2760 SCTP_INP_INCR_REF(new_inp);
2761 }
2762 if (net->hb_timer.ep == old_inp) {
2763 SCTP_INP_DECR_REF(old_inp);
2764 net->hb_timer.ep = new_inp;
2765 SCTP_INP_INCR_REF(new_inp);
2766 }
2767 if (net->rxt_timer.ep == old_inp) {
2768 SCTP_INP_DECR_REF(old_inp);
2769 net->rxt_timer.ep = new_inp;
2770 SCTP_INP_INCR_REF(new_inp);
2771 }
2772 }
2773 SCTP_INP_WUNLOCK(new_inp);
2774 SCTP_INP_WUNLOCK(old_inp);
2775}
2776
2777/*
2778 * insert an laddr entry with the given ifa for the desired list
2779 */
2780static int
2781sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
2782{
2783 struct sctp_laddr *laddr;
2784
2785 laddr = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
2786 if (laddr == NULL) {
2787 /* out of memory? */
2788 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
2789 return (EINVAL);
2790 }
2791 SCTP_INCR_LADDR_COUNT();
2792 memset(laddr, 0, sizeof(*laddr));
2793 (void)SCTP_GETTIME_TIMEVAL(&laddr->start_time);
2794 laddr->ifa = ifa;
2795 laddr->action = act;
2796 atomic_add_int(&ifa->refcount, 1);
2797 /* insert it */
2798 LIST_INSERT_HEAD(list, laddr, sctp_nxt_addr);
2799
2800 return (0);
2801}
2802
2803/*
2804 * Remove an laddr entry from the local address list (on an assoc)
2805 */
2806static void
2807sctp_remove_laddr(struct sctp_laddr *laddr)
2808{
2809
2810 /* remove from the list */
2811 LIST_REMOVE(laddr, sctp_nxt_addr);
2812 sctp_free_ifa(laddr->ifa);
2813 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), laddr);
2814 SCTP_DECR_LADDR_COUNT();
2815}
2816
2817/*
2818 * Bind the socket, with the PCB and global info locks held. Note, if a
2819 * socket address is specified, the PCB lock may be dropped and re-acquired.
2820 *
2821 * sctp_ifap is used to bypass normal local address validation checks.
2822 */
2823int
2824sctp_inpcb_bind_locked(struct sctp_inpcb *inp, struct sockaddr *addr,
2825 struct sctp_ifa *sctp_ifap, struct thread *td)
2826{
2827 /* bind a ep to a socket address */
2828 struct sctppcbhead *head;
2829 struct sctp_inpcb *inp_tmp;
2830 struct inpcb *ip_inp;
2831 int port_reuse_active = 0;
2832 int bindall;
2833 uint16_t lport;
2834 int error;
2835 uint32_t vrf_id;
2836
2837 KASSERT(td != NULL, ("%s: null thread", __func__));
2838
2839 error = 0;
2840 lport = 0;
2841 bindall = 1;
2842 ip_inp = &inp->ip_inp.inp;
2843
2844 SCTP_INP_INFO_WLOCK_ASSERT();
2845 SCTP_INP_WLOCK_ASSERT(inp);
2846
2847#ifdef SCTP_DEBUG
2848 if (addr) {
2849 SCTPDBG(SCTP_DEBUG_PCB1, "Bind called port: %d\n",
2850 ntohs(((struct sockaddr_in *)addr)->sin_port));
2851 SCTPDBG(SCTP_DEBUG_PCB1, "Addr: ");
2852 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, addr);
2853 }
2854#endif
2855 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 0) {
2856 error = EINVAL;
2857 /* already did a bind, subsequent binds NOT allowed ! */
2858 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2859 goto out;
2860 }
2861 if (addr != NULL) {
2862 switch (addr->sa_family) {
2863#ifdef INET
2864 case AF_INET:
2865 {
2866 struct sockaddr_in *sin;
2867
2868 /* IPV6_V6ONLY socket? */
2869 if (SCTP_IPV6_V6ONLY(inp)) {
2870 error = EINVAL;
2871 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2872 goto out;
2873 }
2874 if (addr->sa_len != sizeof(*sin)) {
2875 error = EINVAL;
2876 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2877 goto out;
2878 }
2879
2880 sin = (struct sockaddr_in *)addr;
2881 lport = sin->sin_port;
2882 /*
2883 * For LOOPBACK the prison_local_ip4() call
2884 * will transmute the ip address to the
2885 * proper value.
2886 */
2887 if ((error = prison_local_ip4(td->td_ucred, &sin->sin_addr)) != 0) {
2888 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2889 goto out;
2890 }
2891 if (sin->sin_addr.s_addr != INADDR_ANY) {
2892 bindall = 0;
2893 }
2894 break;
2895 }
2896#endif
2897#ifdef INET6
2898 case AF_INET6:
2899 {
2900 /*
2901 * Only for pure IPv6 Address. (No IPv4
2902 * Mapped!)
2903 */
2904 struct sockaddr_in6 *sin6;
2905
2906 sin6 = (struct sockaddr_in6 *)addr;
2907 if (addr->sa_len != sizeof(*sin6)) {
2908 error = EINVAL;
2909 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2910 goto out;
2911 }
2912 lport = sin6->sin6_port;
2913 /*
2914 * For LOOPBACK the prison_local_ip6() call
2915 * will transmute the ipv6 address to the
2916 * proper value.
2917 */
2918 if ((error = prison_local_ip6(td->td_ucred, &sin6->sin6_addr,
2919 (SCTP_IPV6_V6ONLY(inp) != 0))) != 0) {
2920 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2921 goto out;
2922 }
2923 if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
2924 bindall = 0;
2925 /* KAME hack: embed scopeid */
2926 if (sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone)) != 0) {
2927 error = EINVAL;
2928 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2929 goto out;
2930 }
2931 }
2932 /* this must be cleared for ifa_ifwithaddr() */
2933 sin6->sin6_scope_id = 0;
2934 break;
2935 }
2936#endif
2937 default:
2938 error = EAFNOSUPPORT;
2939 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2940 goto out;
2941 }
2942 }
2943 /* Setup a vrf_id to be the default for the non-bind-all case. */
2944 vrf_id = inp->def_vrf_id;
2945
2946 if (lport) {
2947 /*
2948 * Did the caller specify a port? if so we must see if an ep
2949 * already has this one bound.
2950 */
2951 /* got to be root to get at low ports */
2952 if (ntohs(lport) < IPPORT_RESERVED &&
2953 (error = priv_check(td, PRIV_NETINET_RESERVEDPORT)) != 0) {
2954 goto out;
2955 }
2956 SCTP_INP_INCR_REF(inp);
2957 SCTP_INP_WUNLOCK(inp);
2958 if (bindall) {
2959 vrf_id = inp->def_vrf_id;
2960 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2961 if (inp_tmp != NULL) {
2962 /*
2963 * lock guy returned and lower count note
2964 * that we are not bound so inp_tmp should
2965 * NEVER be inp. And it is this inp
2966 * (inp_tmp) that gets the reference bump,
2967 * so we must lower it.
2968 */
2969 SCTP_INP_DECR_REF(inp_tmp);
2970 /* unlock info */
2971 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2972 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
2973 /*
2974 * Ok, must be one-2-one and
2975 * allowing port re-use
2976 */
2977 port_reuse_active = 1;
2978 goto continue_anyway;
2979 }
2980 SCTP_INP_WLOCK(inp);
2981 SCTP_INP_DECR_REF(inp);
2982 error = EADDRINUSE;
2983 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
2984 goto out;
2985 }
2986 } else {
2987 inp_tmp = sctp_pcb_findep(addr, 0, 1, vrf_id);
2988 if (inp_tmp != NULL) {
2989 /*
2990 * lock guy returned and lower count note
2991 * that we are not bound so inp_tmp should
2992 * NEVER be inp. And it is this inp
2993 * (inp_tmp) that gets the reference bump,
2994 * so we must lower it.
2995 */
2996 SCTP_INP_DECR_REF(inp_tmp);
2997 /* unlock info */
2998 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
2999 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
3000 /*
3001 * Ok, must be one-2-one and
3002 * allowing port re-use
3003 */
3004 port_reuse_active = 1;
3005 goto continue_anyway;
3006 }
3007 SCTP_INP_WLOCK(inp);
3008 SCTP_INP_DECR_REF(inp);
3009 error = EADDRINUSE;
3010 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
3011 goto out;
3012 }
3013 }
3014continue_anyway:
3015 SCTP_INP_WLOCK(inp);
3016 SCTP_INP_DECR_REF(inp);
3017 if (bindall) {
3018 /* verify that no lport is not used by a singleton */
3019 if ((port_reuse_active == 0) &&
3020 (inp_tmp = sctp_isport_inuse(inp, lport, vrf_id))) {
3021 /* Sorry someone already has this one bound */
3022 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_PORTREUSE)) &&
3023 (sctp_is_feature_on(inp_tmp, SCTP_PCB_FLAGS_PORTREUSE))) {
3024 port_reuse_active = 1;
3025 } else {
3026 error = EADDRINUSE;
3027 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
3028 goto out;
3029 }
3030 }
3031 }
3032 } else {
3033 uint16_t first, last, candidate;
3034 uint16_t count;
3035
3036 if (ip_inp->inp_flags & INP_HIGHPORT) {
3037 first = MODULE_GLOBAL(ipport_hifirstauto);
3038 last = MODULE_GLOBAL(ipport_hilastauto);
3039 } else if (ip_inp->inp_flags & INP_LOWPORT) {
3040 if ((error = priv_check(td, PRIV_NETINET_RESERVEDPORT)) != 0) {
3041 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
3042 goto out;
3043 }
3044 first = MODULE_GLOBAL(ipport_lowfirstauto);
3045 last = MODULE_GLOBAL(ipport_lowlastauto);
3046 } else {
3047 first = MODULE_GLOBAL(ipport_firstauto);
3048 last = MODULE_GLOBAL(ipport_lastauto);
3049 }
3050 if (first > last) {
3051 uint16_t temp;
3052
3053 temp = first;
3054 first = last;
3055 last = temp;
3056 }
3057 count = last - first + 1; /* number of candidates */
3058 candidate = first + sctp_select_initial_TSN(&inp->sctp_ep) % (count);
3059
3060 for (;;) {
3061 if (sctp_isport_inuse(inp, htons(candidate), inp->def_vrf_id) == NULL) {
3062 lport = htons(candidate);
3063 break;
3064 }
3065 if (--count == 0) {
3066 error = EADDRINUSE;
3067 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
3068 goto out;
3069 }
3070 if (candidate == last)
3071 candidate = first;
3072 else
3073 candidate = candidate + 1;
3074 }
3075 }
3076 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE |
3077 SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
3078 /*
3079 * this really should not happen. The guy did a non-blocking
3080 * bind and then did a close at the same time.
3081 */
3082 error = EINVAL;
3083 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
3084 goto out;
3085 }
3086 /* ok we look clear to give out this port, so lets setup the binding */
3087 if (bindall) {
3088 /* binding to all addresses, so just set in the proper flags */
3089 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUNDALL;
3090 /* set the automatic addr changes from kernel flag */
3091 if (SCTP_BASE_SYSCTL(sctp_auto_asconf) == 0) {
3092 sctp_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3093 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3094 } else {
3095 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3096 sctp_feature_on(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3097 }
3098 if (SCTP_BASE_SYSCTL(sctp_multiple_asconfs) == 0) {
3099 sctp_feature_off(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3100 } else {
3101 sctp_feature_on(inp, SCTP_PCB_FLAGS_MULTIPLE_ASCONFS);
3102 }
3103 /*
3104 * set the automatic mobility_base from kernel flag (by
3105 * micchie)
3106 */
3107 if (SCTP_BASE_SYSCTL(sctp_mobility_base) == 0) {
3108 sctp_mobility_feature_off(inp, SCTP_MOBILITY_BASE);
3109 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3110 } else {
3111 sctp_mobility_feature_on(inp, SCTP_MOBILITY_BASE);
3112 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3113 }
3114 /*
3115 * set the automatic mobility_fasthandoff from kernel flag
3116 * (by micchie)
3117 */
3118 if (SCTP_BASE_SYSCTL(sctp_mobility_fasthandoff) == 0) {
3119 sctp_mobility_feature_off(inp, SCTP_MOBILITY_FASTHANDOFF);
3120 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3121 } else {
3122 sctp_mobility_feature_on(inp, SCTP_MOBILITY_FASTHANDOFF);
3123 sctp_mobility_feature_off(inp, SCTP_MOBILITY_PRIM_DELETED);
3124 }
3125 } else {
3126 /*
3127 * bind specific, make sure flags is off and add a new
3128 * address structure to the sctp_addr_list inside the ep
3129 * structure.
3130 *
3131 * We will need to allocate one and insert it at the head.
3132 * The socketopt call can just insert new addresses in there
3133 * as well. It will also have to do the embed scope kame
3134 * hack too (before adding).
3135 */
3136 struct sctp_ifa *ifa;
3137 union sctp_sockstore store;
3138
3139 memset(&store, 0, sizeof(store));
3140 switch (addr->sa_family) {
3141#ifdef INET
3142 case AF_INET:
3143 memcpy(&store.sin, addr, sizeof(struct sockaddr_in));
3144 store.sin.sin_port = 0;
3145 break;
3146#endif
3147#ifdef INET6
3148 case AF_INET6:
3149 memcpy(&store.sin6, addr, sizeof(struct sockaddr_in6));
3150 store.sin6.sin6_port = 0;
3151 break;
3152#endif
3153 default:
3154 break;
3155 }
3156 /*
3157 * first find the interface with the bound address need to
3158 * zero out the port to find the address! yuck! can't do
3159 * this earlier since need port for sctp_pcb_findep()
3160 */
3161 if (sctp_ifap != NULL) {
3162 ifa = sctp_ifap;
3163 } else {
3164 /*
3165 * Note for BSD we hit here always other O/S's will
3166 * pass things in via the sctp_ifap argument.
3167 */
3168 ifa = sctp_find_ifa_by_addr(&store.sa,
3169 vrf_id, SCTP_ADDR_NOT_LOCKED);
3170 }
3171 if (ifa == NULL) {
3172 error = EADDRNOTAVAIL;
3173 /* Can't find an interface with that address */
3174 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
3175 goto out;
3176 }
3177#ifdef INET6
3178 if (addr->sa_family == AF_INET6) {
3179 /* GAK, more FIXME IFA lock? */
3180 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
3181 /* Can't bind a non-existent addr. */
3182 error = EINVAL;
3183 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, error);
3184 goto out;
3185 }
3186 }
3187#endif
3188 /* we're not bound all */
3189 inp->sctp_flags &= ~SCTP_PCB_FLAGS_BOUNDALL;
3190 /* allow bindx() to send ASCONF's for binding changes */
3191 sctp_feature_on(inp, SCTP_PCB_FLAGS_DO_ASCONF);
3192 /* clear automatic addr changes from kernel flag */
3193 sctp_feature_off(inp, SCTP_PCB_FLAGS_AUTO_ASCONF);
3194
3195 /* add this address to the endpoint list */
3196 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, 0);
3197 if (error != 0)
3198 goto out;
3199 inp->laddr_count++;
3200 }
3201 /* find the bucket */
3202 if (port_reuse_active) {
3203 /* Put it into tcp 1-2-1 hash */
3204 head = &SCTP_BASE_INFO(sctp_tcpephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashtcpmark))];
3205 inp->sctp_flags |= SCTP_PCB_FLAGS_IN_TCPPOOL;
3206 } else {
3207 head = &SCTP_BASE_INFO(sctp_ephash)[SCTP_PCBHASH_ALLADDR(lport, SCTP_BASE_INFO(hashmark))];
3208 }
3209 /* put it in the bucket */
3210 LIST_INSERT_HEAD(head, inp, sctp_hash);
3211 SCTPDBG(SCTP_DEBUG_PCB1, "Main hash to bind at head:%p, bound port:%d - in tcp_pool=%d\n",
3212 (void *)head, ntohs(lport), port_reuse_active);
3213 /* set in the port */
3214 inp->sctp_lport = lport;
3215
3216 /* turn off just the unbound flag */
3217 KASSERT((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) != 0,
3218 ("%s: inp %p is already bound", __func__, inp));
3219 inp->sctp_flags &= ~SCTP_PCB_FLAGS_UNBOUND;
3220out:
3221 return (error);
3222}
3223
3224int
3225sctp_inpcb_bind(struct socket *so, struct sockaddr *addr,
3226 struct sctp_ifa *sctp_ifap, struct thread *td)
3227{
3228 struct sctp_inpcb *inp;
3229 int error;
3230
3231 inp = so->so_pcb;
3232 SCTP_INP_INFO_WLOCK();
3233 SCTP_INP_WLOCK(inp);
3234 error = sctp_inpcb_bind_locked(inp, addr, sctp_ifap, td);
3235 SCTP_INP_WUNLOCK(inp);
3236 SCTP_INP_INFO_WUNLOCK();
3237 return (error);
3238}
3239
3240static void
3241sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
3242{
3243 struct sctp_iterator *it, *nit;
3244
3245 /*
3246 * We enter with the only the ITERATOR_LOCK in place and a write
3247 * lock on the inp_info stuff.
3248 */
3249 it = sctp_it_ctl.cur_it;
3250 if (it && (it->vn != curvnet)) {
3251 /* Its not looking at our VNET */
3252 return;
3253 }
3254 if (it && (it->inp == inp)) {
3255 /*
3256 * This is tricky and we hold the iterator lock, but when it
3257 * returns and gets the lock (when we release it) the
3258 * iterator will try to operate on inp. We need to stop that
3259 * from happening. But of course the iterator has a
3260 * reference on the stcb and inp. We can mark it and it will
3261 * stop.
3262 *
3263 * If its a single iterator situation, we set the end
3264 * iterator flag. Otherwise we set the iterator to go to the
3265 * next inp.
3266 *
3267 */
3268 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3269 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
3270 } else {
3271 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_INP;
3272 }
3273 }
3274 /*
3275 * Now go through and remove any single reference to our inp that
3276 * may be still pending on the list
3277 */
3278 SCTP_IPI_ITERATOR_WQ_LOCK();
3279 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
3280 if (it->vn != curvnet) {
3281 continue;
3282 }
3283 if (it->inp == inp) {
3284 /* This one points to me is it inp specific? */
3285 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
3286 /* Remove and free this one */
3287 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead,
3288 it, sctp_nxt_itr);
3289 if (it->function_atend != NULL) {
3290 (*it->function_atend) (it->pointer, it->val);
3291 }
3292 SCTP_FREE(it, SCTP_M_ITER);
3293 } else {
3294 it->inp = LIST_NEXT(it->inp, sctp_list);
3295 if (it->inp) {
3296 SCTP_INP_INCR_REF(it->inp);
3297 }
3298 }
3299 /*
3300 * When its put in the refcnt is incremented so decr
3301 * it
3302 */
3303 SCTP_INP_DECR_REF(inp);
3304 }
3305 }
3306 SCTP_IPI_ITERATOR_WQ_UNLOCK();
3307}
3308
3309/* release sctp_inpcb unbind the port */
3310void
3311sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
3312{
3313 /*
3314 * Here we free a endpoint. We must find it (if it is in the Hash
3315 * table) and remove it from there. Then we must also find it in the
3316 * overall list and remove it from there. After all removals are
3317 * complete then any timer has to be stopped. Then start the actual
3318 * freeing. a) Any local lists. b) Any associations. c) The hash of
3319 * all associations. d) finally the ep itself.
3320 */
3321 struct sctp_tcb *asoc, *nasoc;
3322 struct sctp_laddr *laddr, *nladdr;
3323 struct inpcb *ip_pcb;
3324 struct socket *so;
3325 int being_refed = 0;
3326 struct sctp_queued_to_read *sq, *nsq;
3327 int cnt;
3328 sctp_sharedkey_t *shared_key, *nshared_key;
3329
3330#ifdef SCTP_LOG_CLOSING
3331 sctp_log_closing(inp, NULL, 0);
3332#endif
3333 SCTP_ITERATOR_LOCK();
3334 /* mark any iterators on the list or being processed */
3335 sctp_iterator_inp_being_freed(inp);
3336 SCTP_ITERATOR_UNLOCK();
3337
3338 SCTP_ASOC_CREATE_LOCK(inp);
3339 SCTP_INP_INFO_WLOCK();
3340 SCTP_INP_WLOCK(inp);
3341 so = inp->sctp_socket;
3342 KASSERT((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) != 0,
3343 ("%s: inp %p still has socket", __func__, inp));
3344 KASSERT((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) == 0,
3345 ("%s: double free of inp %p", __func__, inp));
3346 if (from == SCTP_CALLED_AFTER_CMPSET_OFCLOSE) {
3347 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CLOSE_IP;
3348 /* socket is gone, so no more wakeups allowed */
3349 inp->sctp_flags |= SCTP_PCB_FLAGS_DONT_WAKE;
3350 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEINPUT;
3351 inp->sctp_flags &= ~SCTP_PCB_FLAGS_WAKEOUTPUT;
3352 }
3353 /* First time through we have the socket lock, after that no more. */
3354 sctp_timer_stop(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL,
3355 SCTP_FROM_SCTP_PCB + SCTP_LOC_1);
3356
3357 if (inp->control) {
3358 sctp_m_freem(inp->control);
3359 inp->control = NULL;
3360 }
3361 if (inp->pkt) {
3362 sctp_m_freem(inp->pkt);
3363 inp->pkt = NULL;
3364 }
3365 ip_pcb = &inp->ip_inp.inp; /* we could just cast the main pointer
3366 * here but I will be nice :> (i.e.
3367 * ip_pcb = ep;) */
3368 if (immediate == SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3369 int cnt_in_sd;
3370
3371 cnt_in_sd = 0;
3372 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3373 SCTP_TCB_LOCK(asoc);
3374 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3375 asoc->sctp_socket = NULL;
3376 /* Skip guys being freed */
3377 cnt_in_sd++;
3378 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3379 /*
3380 * Special case - we did not start a
3381 * kill timer on the asoc due to it
3382 * was not closed. So go ahead and
3383 * start it now.
3384 */
3385 SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_IN_ACCEPT_QUEUE);
3386 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3387 }
3388 SCTP_TCB_UNLOCK(asoc);
3389 continue;
3390 }
3391 if (((SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_WAIT) ||
3392 (SCTP_GET_STATE(asoc) == SCTP_STATE_COOKIE_ECHOED)) &&
3393 (asoc->asoc.total_output_queue_size == 0)) {
3394 /*
3395 * If we have data in queue, we don't want
3396 * to just free since the app may have done,
3397 * send()/close or connect/send/close. And
3398 * it wants the data to get across first.
3399 */
3400 /* Just abandon things in the front states */
3401 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_NOFORCE,
3402 SCTP_FROM_SCTP_PCB + SCTP_LOC_2) == 0) {
3403 cnt_in_sd++;
3404 }
3405 continue;
3406 }
3407 /* Disconnect the socket please */
3408 asoc->sctp_socket = NULL;
3409 SCTP_ADD_SUBSTATE(asoc, SCTP_STATE_CLOSED_SOCKET);
3410 if ((asoc->asoc.size_on_reasm_queue > 0) ||
3411 (asoc->asoc.control_pdapi) ||
3412 (asoc->asoc.size_on_all_streams > 0) ||
3413 (so && (so->so_rcv.sb_cc > 0))) {
3414 /* Left with Data unread */
3415 struct mbuf *op_err;
3416
3417 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3418 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_3;
3419 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3420 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3421 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
3422 (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3423 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3424 }
3425 if (sctp_free_assoc(inp, asoc,
3426 SCTP_PCBFREE_NOFORCE, SCTP_FROM_SCTP_PCB + SCTP_LOC_4) == 0) {
3427 cnt_in_sd++;
3428 }
3429 continue;
3430 } else if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3431 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3432 (asoc->asoc.stream_queue_cnt == 0)) {
3433 if ((*asoc->asoc.ss_functions.sctp_ss_is_user_msgs_incomplete) (asoc, &asoc->asoc)) {
3434 goto abort_anyway;
3435 }
3436 if ((SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_SENT) &&
3437 (SCTP_GET_STATE(asoc) != SCTP_STATE_SHUTDOWN_ACK_SENT)) {
3438 struct sctp_nets *netp;
3439
3440 /*
3441 * there is nothing queued to send,
3442 * so I send shutdown
3443 */
3444 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
3445 (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3446 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3447 }
3448 SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT);
3449 sctp_stop_timers_for_shutdown(asoc);
3450 if (asoc->asoc.alternate) {
3451 netp = asoc->asoc.alternate;
3452 } else {
3453 netp = asoc->asoc.primary_destination;
3454 }
3455 sctp_send_shutdown(asoc, netp);
3456 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, asoc->sctp_ep, asoc,
3457 netp);
3458 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc, NULL);
3459 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_LOCKED);
3460 }
3461 } else {
3462 /* mark into shutdown pending */
3463 SCTP_ADD_SUBSTATE(asoc, SCTP_STATE_SHUTDOWN_PENDING);
3464 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, asoc->sctp_ep, asoc, NULL);
3465 if ((*asoc->asoc.ss_functions.sctp_ss_is_user_msgs_incomplete) (asoc, &asoc->asoc)) {
3466 SCTP_ADD_SUBSTATE(asoc, SCTP_STATE_PARTIAL_MSG_LEFT);
3467 }
3468 if (TAILQ_EMPTY(&asoc->asoc.send_queue) &&
3469 TAILQ_EMPTY(&asoc->asoc.sent_queue) &&
3470 (asoc->asoc.state & SCTP_STATE_PARTIAL_MSG_LEFT)) {
3471 struct mbuf *op_err;
3472
3473 abort_anyway:
3474 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3475 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_5;
3476 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3477 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3478 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
3479 (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3480 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3481 }
3482 if (sctp_free_assoc(inp, asoc,
3483 SCTP_PCBFREE_NOFORCE,
3484 SCTP_FROM_SCTP_PCB + SCTP_LOC_6) == 0) {
3485 cnt_in_sd++;
3486 }
3487 continue;
3488 } else {
3489 sctp_chunk_output(inp, asoc, SCTP_OUTPUT_FROM_CLOSING, SCTP_SO_LOCKED);
3490 }
3491 }
3492 cnt_in_sd++;
3493 SCTP_TCB_UNLOCK(asoc);
3494 }
3495 /* now is there some left in our SHUTDOWN state? */
3496 if (cnt_in_sd) {
3497#ifdef SCTP_LOG_CLOSING
3498 sctp_log_closing(inp, NULL, 2);
3499#endif
3500 inp->sctp_socket = NULL;
3501 SCTP_INP_WUNLOCK(inp);
3502 SCTP_ASOC_CREATE_UNLOCK(inp);
3503 SCTP_INP_INFO_WUNLOCK();
3504 return;
3505 }
3506 }
3507 inp->sctp_socket = NULL;
3508 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) !=
3509 SCTP_PCB_FLAGS_UNBOUND) {
3510 /*
3511 * ok, this guy has been bound. It's port is somewhere in
3512 * the SCTP_BASE_INFO(hash table). Remove it!
3513 */
3514 LIST_REMOVE(inp, sctp_hash);
3515 inp->sctp_flags |= SCTP_PCB_FLAGS_UNBOUND;
3516 }
3517
3518 /*
3519 * If there is a timer running to kill us, forget it, since it may
3520 * have a contest on the INP lock.. which would cause us to die ...
3521 */
3522 cnt = 0;
3523 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_list, sctp_tcblist, nasoc) {
3524 SCTP_TCB_LOCK(asoc);
3525 if (immediate != SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE) {
3526 /* Disconnect the socket please */
3527 asoc->sctp_socket = NULL;
3528 SCTP_ADD_SUBSTATE(asoc, SCTP_STATE_CLOSED_SOCKET);
3529 }
3530 if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3531 if (asoc->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE) {
3532 SCTP_CLEAR_SUBSTATE(asoc, SCTP_STATE_IN_ACCEPT_QUEUE);
3533 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, asoc, NULL);
3534 }
3535 cnt++;
3536 SCTP_TCB_UNLOCK(asoc);
3537 continue;
3538 }
3539 /* Free associations that are NOT killing us */
3540 if ((SCTP_GET_STATE(asoc) != SCTP_STATE_COOKIE_WAIT) &&
3541 ((asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) {
3542 struct mbuf *op_err;
3543
3544 op_err = sctp_generate_cause(SCTP_CAUSE_USER_INITIATED_ABT, "");
3545 asoc->sctp_ep->last_abort_code = SCTP_FROM_SCTP_PCB + SCTP_LOC_7;
3546 sctp_send_abort_tcb(asoc, op_err, SCTP_SO_LOCKED);
3547 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3548 } else if (asoc->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3549 cnt++;
3550 SCTP_TCB_UNLOCK(asoc);
3551 continue;
3552 }
3553 if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) ||
3554 (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3555 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3556 }
3557 if (sctp_free_assoc(inp, asoc, SCTP_PCBFREE_FORCE,
3558 SCTP_FROM_SCTP_PCB + SCTP_LOC_8) == 0) {
3559 cnt++;
3560 }
3561 }
3562 if (cnt) {
3563 /* Ok we have someone out there that will kill us */
3564#ifdef SCTP_LOG_CLOSING
3565 sctp_log_closing(inp, NULL, 3);
3566#endif
3567 SCTP_INP_WUNLOCK(inp);
3568 SCTP_ASOC_CREATE_UNLOCK(inp);
3569 SCTP_INP_INFO_WUNLOCK();
3570 return;
3571 }
3572 if (SCTP_INP_LOCK_CONTENDED(inp))
3573 being_refed++;
3574 if (SCTP_INP_READ_CONTENDED(inp))
3575 being_refed++;
3576 if (SCTP_ASOC_CREATE_LOCK_CONTENDED(inp))
3577 being_refed++;
3578 /* NOTE: 0 refcount also means no timers are referencing us. */
3579 if ((inp->refcount) ||
3580 (being_refed) ||
3581 (inp->sctp_flags & SCTP_PCB_FLAGS_CLOSE_IP)) {
3582#ifdef SCTP_LOG_CLOSING
3583 sctp_log_closing(inp, NULL, 4);
3584#endif
3585 sctp_timer_start(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL);
3586 SCTP_INP_WUNLOCK(inp);
3587 SCTP_ASOC_CREATE_UNLOCK(inp);
3588 SCTP_INP_INFO_WUNLOCK();
3589 return;
3590 }
3591 inp->sctp_ep.signature_change.type = 0;
3592 inp->sctp_flags |= SCTP_PCB_FLAGS_SOCKET_ALLGONE;
3593 /*
3594 * Remove it from the list .. last thing we need a lock for.
3595 */
3596 LIST_REMOVE(inp, sctp_list);
3597 SCTP_INP_WUNLOCK(inp);
3598 SCTP_ASOC_CREATE_UNLOCK(inp);
3599 SCTP_INP_INFO_WUNLOCK();
3600
3601#ifdef SCTP_LOG_CLOSING
3602 sctp_log_closing(inp, NULL, 5);
3603#endif
3604 if ((inp->sctp_asocidhash) != NULL) {
3605 SCTP_HASH_FREE(inp->sctp_asocidhash, inp->hashasocidmark);
3606 inp->sctp_asocidhash = NULL;
3607 }
3608 /* sa_ignore FREED_MEMORY */
3609 TAILQ_FOREACH_SAFE(sq, &inp->read_queue, next, nsq) {
3610 /* Its only abandoned if it had data left */
3611 if (sq->length)
3612 SCTP_STAT_INCR(sctps_left_abandon);
3613
3614 TAILQ_REMOVE(&inp->read_queue, sq, next);
3615 sctp_free_remote_addr(sq->whoFrom);
3616 if (so)
3617 so->so_rcv.sb_cc -= sq->length;
3618 if (sq->data) {
3619 sctp_m_freem(sq->data);
3620 sq->data = NULL;
3621 }
3622 /*
3623 * no need to free the net count, since at this point all
3624 * assoc's are gone.
3625 */
3626 sctp_free_a_readq(NULL, sq);
3627 }
3628 /* Now the sctp_pcb things */
3629 /*
3630 * free each asoc if it is not already closed/free. we can't use the
3631 * macro here since le_next will get freed as part of the
3632 * sctp_free_assoc() call.
3633 */
3634 if (ip_pcb->inp_options) {
3635 (void)sctp_m_free(ip_pcb->inp_options);
3636 ip_pcb->inp_options = 0;
3637 }
3638#ifdef INET6
3639 if (ip_pcb->inp_vflag & INP_IPV6) {
3640 ip6_freepcbopts(ip_pcb->in6p_outputopts);
3641 }
3642#endif /* INET6 */
3643 ip_pcb->inp_vflag = 0;
3644 /* free up authentication fields */
3645 if (inp->sctp_ep.local_auth_chunks != NULL)
3646 sctp_free_chunklist(inp->sctp_ep.local_auth_chunks);
3647 if (inp->sctp_ep.local_hmacs != NULL)
3648 sctp_free_hmaclist(inp->sctp_ep.local_hmacs);
3649
3650 LIST_FOREACH_SAFE(shared_key, &inp->sctp_ep.shared_keys, next, nshared_key) {
3651 LIST_REMOVE(shared_key, next);
3652 sctp_free_sharedkey(shared_key);
3653 /* sa_ignore FREED_MEMORY */
3654 }
3655
3656 /*
3657 * if we have an address list the following will free the list of
3658 * ifaddr's that are set into this ep. Again macro limitations here,
3659 * since the LIST_FOREACH could be a bad idea.
3660 */
3661 LIST_FOREACH_SAFE(laddr, &inp->sctp_addr_list, sctp_nxt_addr, nladdr) {
3662 sctp_remove_laddr(laddr);
3663 }
3664
3665#ifdef SCTP_TRACK_FREED_ASOCS
3666 /* TEMP CODE */
3667 LIST_FOREACH_SAFE(asoc, &inp->sctp_asoc_free_list, sctp_tcblist, nasoc) {
3668 LIST_REMOVE(asoc, sctp_tcblist);
3669 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), asoc);
3670 SCTP_DECR_ASOC_COUNT();
3671 }
3672 /* *** END TEMP CODE *** */
3673#endif
3674 /* Now lets see about freeing the EP hash table. */
3675 if (inp->sctp_tcbhash != NULL) {
3676 SCTP_HASH_FREE(inp->sctp_tcbhash, inp->sctp_hashmark);
3677 inp->sctp_tcbhash = NULL;
3678 }
3679 /* Now we must put the ep memory back into the zone pool */
3680 crfree(inp->ip_inp.inp.inp_cred);
3681 INP_LOCK_DESTROY(&inp->ip_inp.inp);
3682 SCTP_INP_LOCK_DESTROY(inp);
3683 SCTP_INP_READ_DESTROY(inp);
3684 SCTP_ASOC_CREATE_LOCK_DESTROY(inp);
3685 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_ep), inp);
3686 SCTP_DECR_EP_COUNT();
3687}
3688
3689struct sctp_nets *
3690sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
3691{
3692 struct sctp_nets *net;
3693
3694 /* locate the address */
3695 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
3696 if (sctp_cmpaddr(addr, (struct sockaddr *)&net->ro._l_addr))
3697 return (net);
3698 }
3699 return (NULL);
3700}
3701
3702int
3703sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
3704{
3705 struct sctp_ifa *sctp_ifa;
3706
3707 sctp_ifa = sctp_find_ifa_by_addr(addr, vrf_id, SCTP_ADDR_NOT_LOCKED);
3708 if (sctp_ifa) {
3709 return (1);
3710 } else {
3711 return (0);
3712 }
3713}
3714
3715/*
3716 * add's a remote endpoint address, done with the INIT/INIT-ACK as well as
3717 * when a ASCONF arrives that adds it. It will also initialize all the cwnd
3718 * stats of stuff.
3719 */
3720int
3721sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr,
3722 struct sctp_nets **netp, uint16_t port, int set_scope, int from)
3723{
3724 /*
3725 * The following is redundant to the same lines in the
3726 * sctp_aloc_assoc() but is needed since others call the add address
3727 * function
3728 */
3729 struct sctp_nets *net, *netfirst;
3730 int addr_inscope;
3731
3732 SCTPDBG(SCTP_DEBUG_PCB1, "Adding an address (from:%d) to the peer: ",
3733 from);
3734 SCTPDBG_ADDR(SCTP_DEBUG_PCB1, newaddr);
3735
3736 netfirst = sctp_findnet(stcb, newaddr);
3737 if (netfirst) {
3738 /*
3739 * Lie and return ok, we don't want to make the association
3740 * go away for this behavior. It will happen in the TCP
3741 * model in a connected socket. It does not reach the hash
3742 * table until after the association is built so it can't be
3743 * found. Mark as reachable, since the initial creation will
3744 * have been cleared and the NOT_IN_ASSOC flag will have
3745 * been added... and we don't want to end up removing it
3746 * back out.
3747 */
3748 if (netfirst->dest_state & SCTP_ADDR_UNCONFIRMED) {
3749 netfirst->dest_state = (SCTP_ADDR_REACHABLE |
3750 SCTP_ADDR_UNCONFIRMED);
3751 } else {
3752 netfirst->dest_state = SCTP_ADDR_REACHABLE;
3753 }
3754
3755 return (0);
3756 }
3757 addr_inscope = 1;
3758 switch (newaddr->sa_family) {
3759#ifdef INET
3760 case AF_INET:
3761 {
3762 struct sockaddr_in *sin;
3763
3764 sin = (struct sockaddr_in *)newaddr;
3765 if (sin->sin_addr.s_addr == 0) {
3766 /* Invalid address */
3767 return (-1);
3768 }
3769 /* zero out the zero area */
3770 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
3771
3772 /* assure len is set */
3773 sin->sin_len = sizeof(struct sockaddr_in);
3774 if (set_scope) {
3775 if (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) {
3776 stcb->asoc.scope.ipv4_local_scope = 1;
3777 }
3778 } else {
3779 /* Validate the address is in scope */
3780 if ((IN4_ISPRIVATE_ADDRESS(&sin->sin_addr)) &&
3781 (stcb->asoc.scope.ipv4_local_scope == 0)) {
3782 addr_inscope = 0;
3783 }
3784 }
3785 break;
3786 }
3787#endif
3788#ifdef INET6
3789 case AF_INET6:
3790 {
3791 struct sockaddr_in6 *sin6;
3792
3793 sin6 = (struct sockaddr_in6 *)newaddr;
3794 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
3795 /* Invalid address */
3796 return (-1);
3797 }
3798 /* assure len is set */
3799 sin6->sin6_len = sizeof(struct sockaddr_in6);
3800 if (set_scope) {
3801 if (sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id)) {
3802 stcb->asoc.scope.loopback_scope = 1;
3803 stcb->asoc.scope.local_scope = 0;
3804 stcb->asoc.scope.ipv4_local_scope = 1;
3805 stcb->asoc.scope.site_scope = 1;
3806 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
3807 /*
3808 * If the new destination is a
3809 * LINK_LOCAL we must have common
3810 * site scope. Don't set the local
3811 * scope since we may not share all
3812 * links, only loopback can do this.
3813 * Links on the local network would
3814 * also be on our private network
3815 * for v4 too.
3816 */
3817 stcb->asoc.scope.ipv4_local_scope = 1;
3818 stcb->asoc.scope.site_scope = 1;
3819 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr)) {
3820 /*
3821 * If the new destination is
3822 * SITE_LOCAL then we must have site
3823 * scope in common.
3824 */
3825 stcb->asoc.scope.site_scope = 1;
3826 }
3827 } else {
3828 /* Validate the address is in scope */
3829 if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr) &&
3830 (stcb->asoc.scope.loopback_scope == 0)) {
3831 addr_inscope = 0;
3832 } else if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr) &&
3833 (stcb->asoc.scope.local_scope == 0)) {
3834 addr_inscope = 0;
3835 } else if (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr) &&
3836 (stcb->asoc.scope.site_scope == 0)) {
3837 addr_inscope = 0;
3838 }
3839 }
3840 break;
3841 }
3842#endif
3843 default:
3844 /* not supported family type */
3845 return (-1);
3846 }
3847 net = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_net), struct sctp_nets);
3848 if (net == NULL) {
3849 return (-1);
3850 }
3851 SCTP_INCR_RADDR_COUNT();
3852 memset(net, 0, sizeof(struct sctp_nets));
3853 (void)SCTP_GETTIME_TIMEVAL(&net->start_time);
3854 memcpy(&net->ro._l_addr, newaddr, newaddr->sa_len);
3855 switch (newaddr->sa_family) {
3856#ifdef INET
3857 case AF_INET:
3858 ((struct sockaddr_in *)&net->ro._l_addr)->sin_port = stcb->rport;
3859 break;
3860#endif
3861#ifdef INET6
3862 case AF_INET6:
3863 ((struct sockaddr_in6 *)&net->ro._l_addr)->sin6_port = stcb->rport;
3864 break;
3865#endif
3866 default:
3867 break;
3868 }
3869 net->addr_is_local = sctp_is_address_on_local_host(newaddr, stcb->asoc.vrf_id);
3870 if (net->addr_is_local && ((set_scope || (from == SCTP_ADDR_IS_CONFIRMED)))) {
3871 stcb->asoc.scope.loopback_scope = 1;
3872 stcb->asoc.scope.ipv4_local_scope = 1;
3873 stcb->asoc.scope.local_scope = 0;
3874 stcb->asoc.scope.site_scope = 1;
3875 addr_inscope = 1;
3876 }
3877 net->failure_threshold = stcb->asoc.def_net_failure;
3878 net->pf_threshold = stcb->asoc.def_net_pf_threshold;
3879 if (addr_inscope == 0) {
3880 net->dest_state = (SCTP_ADDR_REACHABLE |
3881 SCTP_ADDR_OUT_OF_SCOPE);
3882 } else {
3883 if (from == SCTP_ADDR_IS_CONFIRMED)
3884 /* SCTP_ADDR_IS_CONFIRMED is passed by connect_x */
3885 net->dest_state = SCTP_ADDR_REACHABLE;
3886 else
3887 net->dest_state = SCTP_ADDR_REACHABLE |
3888 SCTP_ADDR_UNCONFIRMED;
3889 }
3890 /*
3891 * We set this to 0, the timer code knows that this means its an
3892 * initial value
3893 */
3894 net->rto_needed = 1;
3895 net->RTO = 0;
3896 net->RTO_measured = 0;
3897 stcb->asoc.numnets++;
3898 net->ref_count = 1;
3899 net->cwr_window_tsn = net->last_cwr_tsn = stcb->asoc.sending_seq - 1;
3900 net->port = port;
3901 net->dscp = stcb->asoc.default_dscp;
3902#ifdef INET6
3903 net->flowlabel = stcb->asoc.default_flowlabel;
3904#endif
3905 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DONOT_HEARTBEAT)) {
3906 net->dest_state |= SCTP_ADDR_NOHB;
3907 } else {
3908 net->dest_state &= ~SCTP_ADDR_NOHB;
3909 }
3910 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DO_NOT_PMTUD)) {
3911 net->dest_state |= SCTP_ADDR_NO_PMTUD;
3912 } else {
3913 net->dest_state &= ~SCTP_ADDR_NO_PMTUD;
3914 }
3915 net->heart_beat_delay = stcb->asoc.heart_beat_delay;
3916 /* Init the timer structure */
3917 SCTP_OS_TIMER_INIT(&net->rxt_timer.timer);
3918 SCTP_OS_TIMER_INIT(&net->pmtu_timer.timer);
3919 SCTP_OS_TIMER_INIT(&net->hb_timer.timer);
3920
3921 /* Now generate a route for this guy */
3922#ifdef INET6
3923 /* KAME hack: embed scopeid */
3924 if (newaddr->sa_family == AF_INET6) {
3925 struct sockaddr_in6 *sin6;
3926
3927 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
3928 (void)sa6_embedscope(sin6, MODULE_GLOBAL(ip6_use_defzone));
3929 sin6->sin6_scope_id = 0;
3930 }
3931#endif
3932 SCTP_RTALLOC((sctp_route_t *)&net->ro,
3933 stcb->asoc.vrf_id,
3934 stcb->sctp_ep->fibnum);
3935
3936 net->src_addr_selected = 0;
3937 if (SCTP_ROUTE_HAS_VALID_IFN(&net->ro)) {
3938 /* Get source address */
3939 net->ro._s_addr = sctp_source_address_selection(stcb->sctp_ep,
3940 stcb,
3941 (sctp_route_t *)&net->ro,
3942 net,
3943 0,
3944 stcb->asoc.vrf_id);
3945 if (stcb->asoc.default_mtu > 0) {
3946 net->mtu = stcb->asoc.default_mtu;
3947 switch (net->ro._l_addr.sa.sa_family) {
3948#ifdef INET
3949 case AF_INET:
3950 net->mtu += SCTP_MIN_V4_OVERHEAD;
3951 break;
3952#endif
3953#ifdef INET6
3954 case AF_INET6:
3955 net->mtu += SCTP_MIN_OVERHEAD;
3956 break;
3957#endif
3958 default:
3959 break;
3960 }
3961#if defined(INET) || defined(INET6)
3962 if (net->port) {
3963 net->mtu += (uint32_t)sizeof(struct udphdr);
3964 }
3965#endif
3966 } else if (net->ro._s_addr != NULL) {
3967 uint32_t imtu, rmtu, hcmtu;
3968
3969 net->src_addr_selected = 1;
3970 /* Now get the interface MTU */
3971 if (net->ro._s_addr->ifn_p != NULL) {
3972 /*
3973 * XXX: Should we here just use
3974 * net->ro._s_addr->ifn_p->ifn_mtu
3975 */
3976 imtu = SCTP_GATHER_MTU_FROM_IFN_INFO(net->ro._s_addr->ifn_p->ifn_p,
3977 net->ro._s_addr->ifn_p->ifn_index);
3978 } else {
3979 imtu = 0;
3980 }
3981 rmtu = SCTP_GATHER_MTU_FROM_ROUTE(net->ro._s_addr, &net->ro._l_addr.sa, net->ro.ro_nh);
3982 hcmtu = sctp_hc_get_mtu(&net->ro._l_addr, stcb->sctp_ep->fibnum);
3983 net->mtu = sctp_min_mtu(hcmtu, rmtu, imtu);
3984 }
3985 }
3986 if (net->mtu == 0) {
3987 if (stcb->asoc.default_mtu > 0) {
3988 net->mtu = stcb->asoc.default_mtu;
3989 switch (net->ro._l_addr.sa.sa_family) {
3990#ifdef INET
3991 case AF_INET:
3992 net->mtu += SCTP_MIN_V4_OVERHEAD;
3993 break;
3994#endif
3995#ifdef INET6
3996 case AF_INET6:
3997 net->mtu += SCTP_MIN_OVERHEAD;
3998 break;
3999#endif
4000 default:
4001 break;
4002 }
4003#if defined(INET) || defined(INET6)
4004 if (net->port) {
4005 net->mtu += (uint32_t)sizeof(struct udphdr);
4006 }
4007#endif
4008 } else {
4009 switch (newaddr->sa_family) {
4010#ifdef INET
4011 case AF_INET:
4012 net->mtu = SCTP_DEFAULT_MTU;
4013 break;
4014#endif
4015#ifdef INET6
4016 case AF_INET6:
4017 net->mtu = 1280;
4018 break;
4019#endif
4020 default:
4021 break;
4022 }
4023 }
4024 }
4025#if defined(INET) || defined(INET6)
4026 if (net->port) {
4027 net->mtu -= (uint32_t)sizeof(struct udphdr);
4028 }
4029#endif
4030 if (from == SCTP_ALLOC_ASOC) {
4031 stcb->asoc.smallest_mtu = net->mtu;
4032 }
4033 if (stcb->asoc.smallest_mtu > net->mtu) {
4034 sctp_pathmtu_adjustment(stcb, net->mtu, true);
4035 }
4036#ifdef INET6
4037 if (newaddr->sa_family == AF_INET6) {
4038 struct sockaddr_in6 *sin6;
4039
4040 sin6 = (struct sockaddr_in6 *)&net->ro._l_addr;
4041 (void)sa6_recoverscope(sin6);
4042 }
4043#endif
4044
4045 /* JRS - Use the congestion control given in the CC module */
4046 if (stcb->asoc.cc_functions.sctp_set_initial_cc_param != NULL)
4047 (*stcb->asoc.cc_functions.sctp_set_initial_cc_param) (stcb, net);
4048
4049 /*
4050 * CMT: CUC algo - set find_pseudo_cumack to TRUE (1) at beginning
4051 * of assoc (2005/06/27, iyengar@cis.udel.edu)
4052 */
4053 net->find_pseudo_cumack = 1;
4054 net->find_rtx_pseudo_cumack = 1;
4055 /* Choose an initial flowid. */
4056 net->flowid = stcb->asoc.my_vtag ^
4057 ntohs(stcb->rport) ^
4058 ntohs(stcb->sctp_ep->sctp_lport);
4059 net->flowtype = M_HASHTYPE_OPAQUE_HASH;
4060 if (netp) {
4061 *netp = net;
4062 }
4063 netfirst = TAILQ_FIRST(&stcb->asoc.nets);
4064 if (net->ro.ro_nh == NULL) {
4065 /* Since we have no route put it at the back */
4066 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4067 } else if (netfirst == NULL) {
4068 /* We are the first one in the pool. */
4069 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4070 } else if (netfirst->ro.ro_nh == NULL) {
4071 /*
4072 * First one has NO route. Place this one ahead of the first
4073 * one.
4074 */
4075 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4076 } else if (net->ro.ro_nh->nh_ifp != netfirst->ro.ro_nh->nh_ifp) {
4077 /*
4078 * This one has a different interface than the one at the
4079 * top of the list. Place it ahead.
4080 */
4081 TAILQ_INSERT_HEAD(&stcb->asoc.nets, net, sctp_next);
4082 } else {
4083 /*
4084 * Ok we have the same interface as the first one. Move
4085 * forward until we find either a) one with a NULL route...
4086 * insert ahead of that b) one with a different ifp.. insert
4087 * after that. c) end of the list.. insert at the tail.
4088 */
4089 struct sctp_nets *netlook;
4090
4091 do {
4092 netlook = TAILQ_NEXT(netfirst, sctp_next);
4093 if (netlook == NULL) {
4094 /* End of the list */
4095 TAILQ_INSERT_TAIL(&stcb->asoc.nets, net, sctp_next);
4096 break;
4097 } else if (netlook->ro.ro_nh == NULL) {
4098 /* next one has NO route */
4099 TAILQ_INSERT_BEFORE(netfirst, net, sctp_next);
4100 break;
4101 } else if (netlook->ro.ro_nh->nh_ifp != net->ro.ro_nh->nh_ifp) {
4102 TAILQ_INSERT_AFTER(&stcb->asoc.nets, netlook,
4103 net, sctp_next);
4104 break;
4105 }
4106 /* Shift forward */
4107 netfirst = netlook;
4108 } while (netlook != NULL);
4109 }
4110
4111 /* got to have a primary set */
4112 if (stcb->asoc.primary_destination == 0) {
4113 stcb->asoc.primary_destination = net;
4114 } else if ((stcb->asoc.primary_destination->ro.ro_nh == NULL) &&
4115 (net->ro.ro_nh) &&
4116 ((net->dest_state & SCTP_ADDR_UNCONFIRMED) == 0)) {
4117 /* No route to current primary adopt new primary */
4118 stcb->asoc.primary_destination = net;
4119 }
4120 /* Validate primary is first */
4121 net = TAILQ_FIRST(&stcb->asoc.nets);
4122 if ((net != stcb->asoc.primary_destination) &&
4123 (stcb->asoc.primary_destination)) {
4124 /*
4125 * first one on the list is NOT the primary sctp_cmpaddr()
4126 * is much more efficient if the primary is the first on the
4127 * list, make it so.
4128 */
4129 TAILQ_REMOVE(&stcb->asoc.nets,
4130 stcb->asoc.primary_destination, sctp_next);
4131 TAILQ_INSERT_HEAD(&stcb->asoc.nets,
4132 stcb->asoc.primary_destination, sctp_next);
4133 }
4134 return (0);
4135}
4136
4137static uint32_t
4138sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
4139{
4140 uint32_t id;
4141 struct sctpasochead *head;
4142 struct sctp_tcb *lstcb;
4143
4144try_again:
4145 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
4146 /* TSNH */
4147 return (0);
4148 }
4149 /*
4150 * We don't allow assoc id to be one of SCTP_FUTURE_ASSOC,
4151 * SCTP_CURRENT_ASSOC and SCTP_ALL_ASSOC.
4152 */
4153 if (inp->sctp_associd_counter <= SCTP_ALL_ASSOC) {
4154 inp->sctp_associd_counter = SCTP_ALL_ASSOC + 1;
4155 }
4156 id = inp->sctp_associd_counter;
4157 inp->sctp_associd_counter++;
4158 lstcb = sctp_findasoc_ep_asocid_locked(inp, (sctp_assoc_t)id, 0);
4159 if (lstcb) {
4160 goto try_again;
4161 }
4162 head = &inp->sctp_asocidhash[SCTP_PCBHASH_ASOC(id, inp->hashasocidmark)];
4163 LIST_INSERT_HEAD(head, stcb, sctp_tcbasocidhash);
4164 stcb->asoc.in_asocid_hash = 1;
4165 return (id);
4166}
4167
4168/*
4169 * allocate an association and add it to the endpoint. The caller must be
4170 * careful to add all additional addresses once they are know right away or
4171 * else the assoc will be may experience a blackout scenario.
4172 */
4173static struct sctp_tcb *
4174sctp_aloc_assoc_locked(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4175 int *error, uint32_t override_tag, uint32_t initial_tsn,
4176 uint32_t vrf_id, uint16_t o_streams, uint16_t port,
4177 struct thread *p,
4178 int initialize_auth_params)
4179{
4180 /* note the p argument is only valid in unbound sockets */
4181
4182 struct sctp_tcb *stcb;
4183 struct sctp_association *asoc;
4184 struct sctpasochead *head;
4185 uint16_t rport;
4186 int err;
4187
4188 SCTP_INP_INFO_WLOCK_ASSERT();
4189 SCTP_INP_WLOCK_ASSERT(inp);
4190
4191 /*
4192 * Assumption made here: Caller has done a
4193 * sctp_findassociation_ep_addr(ep, addr's); to make sure the
4194 * address does not exist already.
4195 */
4196 if (SCTP_BASE_INFO(ipi_count_asoc) >= SCTP_MAX_NUM_OF_ASOC) {
4197 /* Hit max assoc, sorry no more */
4198 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4199 *error = ENOBUFS;
4200 return (NULL);
4201 }
4202 if (firstaddr == NULL) {
4203 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4204 *error = EINVAL;
4205 return (NULL);
4206 }
4207 if (inp->sctp_flags & (SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4208 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4209 *error = EINVAL;
4210 return (NULL);
4211 }
4212 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) &&
4213 ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_PORTREUSE)) ||
4214 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4215 /*
4216 * If its in the TCP pool, its NOT allowed to create an
4217 * association. The parent listener needs to call
4218 * sctp_aloc_assoc.. or the one-2-many socket. If a peeled
4219 * off, or connected one does this.. its an error.
4220 */
4221 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4222 *error = EINVAL;
4223 return (NULL);
4224 }
4225 if ((inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
4226 (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) {
4227 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) ||
4228 (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED)) {
4229 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4230 *error = EINVAL;
4231 return (NULL);
4232 }
4233 }
4234 SCTPDBG(SCTP_DEBUG_PCB3, "Allocate an association for peer:");
4235#ifdef SCTP_DEBUG
4236 if (firstaddr) {
4237 SCTPDBG_ADDR(SCTP_DEBUG_PCB3, firstaddr);
4238 switch (firstaddr->sa_family) {
4239#ifdef INET
4240 case AF_INET:
4241 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4242 ntohs(((struct sockaddr_in *)firstaddr)->sin_port));
4243 break;
4244#endif
4245#ifdef INET6
4246 case AF_INET6:
4247 SCTPDBG(SCTP_DEBUG_PCB3, "Port:%d\n",
4248 ntohs(((struct sockaddr_in6 *)firstaddr)->sin6_port));
4249 break;
4250#endif
4251 default:
4252 break;
4253 }
4254 } else {
4255 SCTPDBG(SCTP_DEBUG_PCB3, "None\n");
4256 }
4257#endif /* SCTP_DEBUG */
4258 switch (firstaddr->sa_family) {
4259#ifdef INET
4260 case AF_INET:
4261 {
4262 struct sockaddr_in *sin;
4263
4264 sin = (struct sockaddr_in *)firstaddr;
4265 if ((ntohs(sin->sin_port) == 0) ||
4266 (sin->sin_addr.s_addr == INADDR_ANY) ||
4267 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
4268 IN_MULTICAST(ntohl(sin->sin_addr.s_addr)) ||
4269 (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) != 0) &&
4270 (SCTP_IPV6_V6ONLY(inp) != 0))) {
4271 /* Invalid address */
4272 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4273 *error = EINVAL;
4274 return (NULL);
4275 }
4276 rport = sin->sin_port;
4277 break;
4278 }
4279#endif
4280#ifdef INET6
4281 case AF_INET6:
4282 {
4283 struct sockaddr_in6 *sin6;
4284
4285 sin6 = (struct sockaddr_in6 *)firstaddr;
4286 if ((ntohs(sin6->sin6_port) == 0) ||
4287 IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
4288 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr) ||
4289 ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0)) {
4290 /* Invalid address */
4291 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4292 *error = EINVAL;
4293 return (NULL);
4294 }
4295 rport = sin6->sin6_port;
4296 break;
4297 }
4298#endif
4299 default:
4300 /* not supported family type */
4301 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, EINVAL);
4302 *error = EINVAL;
4303 return (NULL);
4304 }
4305 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
4306 /*
4307 * If you have not performed a bind, then we need to do the
4308 * ephemeral bind for you.
4309 */
4310 if ((err = sctp_inpcb_bind_locked(inp, NULL, NULL, p))) {
4311 /* bind error, probably perm */
4312 *error = err;
4313 return (NULL);
4314 }
4315 }
4316 stcb = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_asoc), struct sctp_tcb);
4317 if (stcb == NULL) {
4318 /* out of memory? */
4319 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
4320 *error = ENOMEM;
4321 return (NULL);
4322 }
4323 SCTP_INCR_ASOC_COUNT();
4324
4325 memset(stcb, 0, sizeof(*stcb));
4326 asoc = &stcb->asoc;
4327
4328 SCTP_TCB_LOCK_INIT(stcb);
4329 SCTP_TCB_SEND_LOCK_INIT(stcb);
4330 stcb->rport = rport;
4331 /* setup back pointer's */
4332 stcb->sctp_ep = inp;
4333 stcb->sctp_socket = inp->sctp_socket;
4334 if ((err = sctp_init_asoc(inp, stcb, override_tag, initial_tsn, vrf_id, o_streams))) {
4335 /* failed */
4336 SCTP_TCB_LOCK_DESTROY(stcb);
4337 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4338 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4339 SCTP_DECR_ASOC_COUNT();
4340 *error = err;
4341 return (NULL);
4342 }
4343 SCTP_TCB_LOCK(stcb);
4344
4345 asoc->assoc_id = sctp_aloc_a_assoc_id(inp, stcb);
4346 /* now that my_vtag is set, add it to the hash */
4347 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(stcb->asoc.my_vtag, SCTP_BASE_INFO(hashasocmark))];
4348 /* put it in the bucket in the vtag hash of assoc's for the system */
4349 LIST_INSERT_HEAD(head, stcb, sctp_asocs);
4350
4351 if (sctp_add_remote_addr(stcb, firstaddr, NULL, port, SCTP_DO_SETSCOPE, SCTP_ALLOC_ASOC)) {
4352 /* failure.. memory error? */
4353 if (asoc->strmout) {
4354 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
4355 asoc->strmout = NULL;
4356 }
4357 if (asoc->mapping_array) {
4358 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
4359 asoc->mapping_array = NULL;
4360 }
4361 if (asoc->nr_mapping_array) {
4362 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
4363 asoc->nr_mapping_array = NULL;
4364 }
4365 SCTP_DECR_ASOC_COUNT();
4366 SCTP_TCB_UNLOCK(stcb);
4367 SCTP_TCB_LOCK_DESTROY(stcb);
4368 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
4369 LIST_REMOVE(stcb, sctp_asocs);
4370 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4371 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
4372 SCTP_INP_WUNLOCK(inp);
4373 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOBUFS);
4374 *error = ENOBUFS;
4375 return (NULL);
4376 }
4377 /* Init all the timers */
4378 SCTP_OS_TIMER_INIT(&asoc->dack_timer.timer);
4379 SCTP_OS_TIMER_INIT(&asoc->strreset_timer.timer);
4380 SCTP_OS_TIMER_INIT(&asoc->asconf_timer.timer);
4381 SCTP_OS_TIMER_INIT(&asoc->shut_guard_timer.timer);
4382 SCTP_OS_TIMER_INIT(&asoc->autoclose_timer.timer);
4383 SCTP_OS_TIMER_INIT(&asoc->delete_prim_timer.timer);
4384
4385 LIST_INSERT_HEAD(&inp->sctp_asoc_list, stcb, sctp_tcblist);
4386 /* now file the port under the hash as well */
4387 if (inp->sctp_tcbhash != NULL) {
4388 head = &inp->sctp_tcbhash[SCTP_PCBHASH_ALLADDR(stcb->rport,
4389 inp->sctp_hashmark)];
4390 LIST_INSERT_HEAD(head, stcb, sctp_tcbhash);
4391 }
4392 if (initialize_auth_params == SCTP_INITIALIZE_AUTH_PARAMS) {
4393 sctp_initialize_auth_params(inp, stcb);
4394 }
4395 SCTPDBG(SCTP_DEBUG_PCB1, "Association %p now allocated\n", (void *)stcb);
4396 return (stcb);
4397}
4398
4399struct sctp_tcb *
4400sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4401 int *error, uint32_t override_tag, uint32_t initial_tsn,
4402 uint32_t vrf_id, uint16_t o_streams, uint16_t port,
4403 struct thread *p,
4404 int initialize_auth_params)
4405{
4406 struct sctp_tcb *stcb;
4407
4408 SCTP_INP_INFO_WLOCK();
4409 SCTP_INP_WLOCK(inp);
4410 stcb = sctp_aloc_assoc_locked(inp, firstaddr, error, override_tag,
4411 initial_tsn, vrf_id, o_streams, port, p, initialize_auth_params);
4412 SCTP_INP_INFO_WUNLOCK();
4413 SCTP_INP_WUNLOCK(inp);
4414 return (stcb);
4415}
4416
4417struct sctp_tcb *
4418sctp_aloc_assoc_connected(struct sctp_inpcb *inp, struct sockaddr *firstaddr,
4419 int *error, uint32_t override_tag, uint32_t initial_tsn,
4420 uint32_t vrf_id, uint16_t o_streams, uint16_t port,
4421 struct thread *p,
4422 int initialize_auth_params)
4423{
4424 struct sctp_tcb *stcb;
4425
4426 SCTP_INP_INFO_WLOCK();
4427 SCTP_INP_WLOCK(inp);
4428 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
4429 SCTP_IS_LISTENING(inp)) {
4430 SCTP_INP_INFO_WUNLOCK();
4431 SCTP_INP_WUNLOCK(inp);
4432 *error = EINVAL;
4433 return (NULL);
4434 }
4435 stcb = sctp_aloc_assoc_locked(inp, firstaddr, error, override_tag,
4436 initial_tsn, vrf_id, o_streams, port, p, initialize_auth_params);
4437 SCTP_INP_INFO_WUNLOCK();
4438 if (stcb != NULL && (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)) {
4439 inp->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED;
4440 soisconnecting(inp->sctp_socket);
4441 }
4442 SCTP_INP_WUNLOCK(inp);
4443 return (stcb);
4444}
4445
4446void
4447sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
4448{
4449 struct sctp_inpcb *inp;
4450 struct sctp_association *asoc;
4451
4452 inp = stcb->sctp_ep;
4453 asoc = &stcb->asoc;
4454 asoc->numnets--;
4455 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
4456 if (net == asoc->primary_destination) {
4457 /* Reset primary */
4458 struct sctp_nets *lnet;
4459
4460 lnet = TAILQ_FIRST(&asoc->nets);
4461 /*
4462 * Mobility adaptation Ideally, if deleted destination is
4463 * the primary, it becomes a fast retransmission trigger by
4464 * the subsequent SET PRIMARY. (by micchie)
4465 */
4466 if (sctp_is_mobility_feature_on(stcb->sctp_ep,
4467 SCTP_MOBILITY_BASE) ||
4468 sctp_is_mobility_feature_on(stcb->sctp_ep,
4469 SCTP_MOBILITY_FASTHANDOFF)) {
4470 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: primary dst is deleting\n");
4471 if (asoc->deleted_primary != NULL) {
4472 SCTPDBG(SCTP_DEBUG_ASCONF1, "remove_net: deleted primary may be already stored\n");
4473 goto out;
4474 }
4475 asoc->deleted_primary = net;
4476 atomic_add_int(&net->ref_count, 1);
4477 memset(&net->lastsa, 0, sizeof(net->lastsa));
4478 memset(&net->lastsv, 0, sizeof(net->lastsv));
4479 sctp_mobility_feature_on(stcb->sctp_ep,
4480 SCTP_MOBILITY_PRIM_DELETED);
4481 sctp_timer_start(SCTP_TIMER_TYPE_PRIM_DELETED,
4482 stcb->sctp_ep, stcb, NULL);
4483 }
4484out:
4485 /* Try to find a confirmed primary */
4486 asoc->primary_destination = sctp_find_alternate_net(stcb, lnet, 0);
4487 }
4488 if (net == asoc->last_data_chunk_from) {
4489 /* Reset primary */
4490 asoc->last_data_chunk_from = TAILQ_FIRST(&asoc->nets);
4491 }
4492 if (net == asoc->last_control_chunk_from) {
4493 /* Clear net */
4494 asoc->last_control_chunk_from = NULL;
4495 }
4496 if (net == asoc->last_net_cmt_send_started) {
4497 /* Clear net */
4498 asoc->last_net_cmt_send_started = NULL;
4499 }
4500 if (net == stcb->asoc.alternate) {
4501 sctp_free_remote_addr(stcb->asoc.alternate);
4502 stcb->asoc.alternate = NULL;
4503 }
4504 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
4505 SCTP_FROM_SCTP_PCB + SCTP_LOC_9);
4506 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
4507 SCTP_FROM_SCTP_PCB + SCTP_LOC_10);
4508 net->dest_state |= SCTP_ADDR_BEING_DELETED;
4509 sctp_free_remote_addr(net);
4510}
4511
4512/*
4513 * remove a remote endpoint address from an association, it will fail if the
4514 * address does not exist.
4515 */
4516int
4517sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
4518{
4519 /*
4520 * Here we need to remove a remote address. This is quite simple, we
4521 * first find it in the list of address for the association
4522 * (tasoc->asoc.nets) and then if it is there, we do a LIST_REMOVE
4523 * on that item. Note we do not allow it to be removed if there are
4524 * no other addresses.
4525 */
4526 struct sctp_association *asoc;
4527 struct sctp_nets *net, *nnet;
4528
4529 asoc = &stcb->asoc;
4530
4531 /* locate the address */
4532 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
4533 if (net->ro._l_addr.sa.sa_family != remaddr->sa_family) {
4534 continue;
4535 }
4536 if (sctp_cmpaddr((struct sockaddr *)&net->ro._l_addr,
4537 remaddr)) {
4538 /* we found the guy */
4539 if (asoc->numnets < 2) {
4540 /* Must have at LEAST two remote addresses */
4541 return (-1);
4542 } else {
4543 sctp_remove_net(stcb, net);
4544 return (0);
4545 }
4546 }
4547 }
4548 /* not found. */
4549 return (-2);
4550}
4551
4552static bool
4553sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport, uint32_t now)
4554{
4555 struct sctpvtaghead *chain;
4556 struct sctp_tagblock *twait_block;
4557 int i;
4558
4559 SCTP_INP_INFO_LOCK_ASSERT();
4560 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4561 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4562 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4563 if ((twait_block->vtag_block[i].tv_sec_at_expire >= now) &&
4564 (twait_block->vtag_block[i].v_tag == tag) &&
4565 (twait_block->vtag_block[i].lport == lport) &&
4566 (twait_block->vtag_block[i].rport == rport)) {
4567 return (true);
4568 }
4569 }
4570 }
4571 return (false);
4572}
4573
4574static void
4575sctp_set_vtag_block(struct sctp_timewait *vtag_block, uint32_t time,
4576 uint32_t tag, uint16_t lport, uint16_t rport)
4577{
4578 vtag_block->tv_sec_at_expire = time;
4579 vtag_block->v_tag = tag;
4580 vtag_block->lport = lport;
4581 vtag_block->rport = rport;
4582}
4583
4584static void
4585sctp_add_vtag_to_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
4586{
4587 struct sctpvtaghead *chain;
4588 struct sctp_tagblock *twait_block;
4589 struct timeval now;
4590 uint32_t time;
4591 int i;
4592 bool set;
4593
4594 SCTP_INP_INFO_WLOCK_ASSERT();
4595 (void)SCTP_GETTIME_TIMEVAL(&now);
4596 time = (uint32_t)now.tv_sec + SCTP_BASE_SYSCTL(sctp_vtag_time_wait);
4597 chain = &SCTP_BASE_INFO(vtag_timewait)[(tag % SCTP_STACK_VTAG_HASH_SIZE)];
4598 set = false;
4599 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
4600 /* Block(s) present, lets find space, and expire on the fly */
4601 for (i = 0; i < SCTP_NUMBER_IN_VTAG_BLOCK; i++) {
4602 if ((twait_block->vtag_block[i].v_tag == 0) && !set) {
4603 sctp_set_vtag_block(twait_block->vtag_block + i, time, tag, lport, rport);
4604 set = true;
4605 continue;
4606 }
4607 if ((twait_block->vtag_block[i].v_tag != 0) &&
4608 (twait_block->vtag_block[i].tv_sec_at_expire < (uint32_t)now.tv_sec)) {
4609 if (set) {
4610 /* Audit expires this guy */
4611 sctp_set_vtag_block(twait_block->vtag_block + i, 0, 0, 0, 0);
4612 } else {
4613 /* Reuse it for the new tag */
4614 sctp_set_vtag_block(twait_block->vtag_block + i, time, tag, lport, rport);
4615 set = true;
4616 }
4617 }
4618 }
4619 if (set) {
4620 /*
4621 * We only do up to the block where we can place our
4622 * tag for audits
4623 */
4624 break;
4625 }
4626 }
4627 /* Need to add a new block to chain */
4628 if (!set) {
4629 SCTP_MALLOC(twait_block, struct sctp_tagblock *,
4630 sizeof(struct sctp_tagblock), SCTP_M_TIMW);
4631 if (twait_block == NULL) {
4632 return;
4633 }
4634 memset(twait_block, 0, sizeof(struct sctp_tagblock));
4635 LIST_INSERT_HEAD(chain, twait_block, sctp_nxt_tagblock);
4636 sctp_set_vtag_block(twait_block->vtag_block, time, tag, lport, rport);
4637 }
4638}
4639
4640void
4641sctp_clean_up_stream(struct sctp_tcb *stcb, struct sctp_readhead *rh)
4642{
4643 struct sctp_tmit_chunk *chk, *nchk;
4644 struct sctp_queued_to_read *control, *ncontrol;
4645
4646 TAILQ_FOREACH_SAFE(control, rh, next_instrm, ncontrol) {
4647 TAILQ_REMOVE(rh, control, next_instrm);
4648 control->on_strm_q = 0;
4649 if (control->on_read_q == 0) {
4650 sctp_free_remote_addr(control->whoFrom);
4651 if (control->data) {
4652 sctp_m_freem(control->data);
4653 control->data = NULL;
4654 }
4655 }
4656 /* Reassembly free? */
4657 TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) {
4658 TAILQ_REMOVE(&control->reasm, chk, sctp_next);
4659 if (chk->data) {
4660 sctp_m_freem(chk->data);
4661 chk->data = NULL;
4662 }
4663 if (chk->holds_key_ref)
4664 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4665 sctp_free_remote_addr(chk->whoTo);
4666 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4667 SCTP_DECR_CHK_COUNT();
4668 /* sa_ignore FREED_MEMORY */
4669 }
4670 /*
4671 * We don't free the address here since all the net's were
4672 * freed above.
4673 */
4674 if (control->on_read_q == 0) {
4675 sctp_free_a_readq(stcb, control);
4676 }
4677 }
4678}
4679
4680/*-
4681 * Free the association after un-hashing the remote port. This
4682 * function ALWAYS returns holding NO LOCK on the stcb. It DOES
4683 * expect that the input to this function IS a locked TCB.
4684 * It will return 0, if it did NOT destroy the association (instead
4685 * it unlocks it. It will return NON-zero if it either destroyed the
4686 * association OR the association is already destroyed.
4687 */
4688int
4689sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
4690{
4691 int i;
4692 struct sctp_association *asoc;
4693 struct sctp_nets *net, *nnet;
4694 struct sctp_laddr *laddr, *naddr;
4695 struct sctp_tmit_chunk *chk, *nchk;
4696 struct sctp_asconf_addr *aparam, *naparam;
4697 struct sctp_asconf_ack *aack, *naack;
4698 struct sctp_stream_reset_list *strrst, *nstrrst;
4699 struct sctp_queued_to_read *sq, *nsq;
4700 struct sctp_stream_queue_pending *sp, *nsp;
4701 sctp_sharedkey_t *shared_key, *nshared_key;
4702 struct socket *so;
4703
4704 /* first, lets purge the entry from the hash table. */
4705
4706#ifdef SCTP_LOG_CLOSING
4707 sctp_log_closing(inp, stcb, 6);
4708#endif
4709 if (stcb->asoc.state == 0) {
4710#ifdef SCTP_LOG_CLOSING
4711 sctp_log_closing(inp, NULL, 7);
4712#endif
4713 /* there is no asoc, really TSNH :-0 */
4714 return (1);
4715 }
4716 SCTP_TCB_SEND_LOCK(stcb);
4717 if (stcb->asoc.alternate) {
4718 sctp_free_remote_addr(stcb->asoc.alternate);
4719 stcb->asoc.alternate = NULL;
4720 }
4721 /* TEMP CODE */
4722 if (stcb->freed_from_where == 0) {
4723 /* Only record the first place free happened from */
4724 stcb->freed_from_where = from_location;
4725 }
4726 /* TEMP CODE */
4727
4728 asoc = &stcb->asoc;
4729 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4730 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4731 /* nothing around */
4732 so = NULL;
4733 else
4734 so = inp->sctp_socket;
4735
4736 /*
4737 * We used timer based freeing if a reader or writer is in the way.
4738 * So we first check if we are actually being called from a timer,
4739 * if so we abort early if a reader or writer is still in the way.
4740 */
4741 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
4742 (from_inpcbfree == SCTP_NORMAL_PROC)) {
4743 /*
4744 * is it the timer driving us? if so are the reader/writers
4745 * gone?
4746 */
4747 if (stcb->asoc.refcnt) {
4748 /* nope, reader or writer in the way */
4749 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4750 /* no asoc destroyed */
4751 SCTP_TCB_SEND_UNLOCK(stcb);
4752 SCTP_TCB_UNLOCK(stcb);
4753#ifdef SCTP_LOG_CLOSING
4754 sctp_log_closing(inp, stcb, 8);
4755#endif
4756 return (0);
4757 }
4758 }
4759 /* Now clean up any other timers */
4760 sctp_stop_association_timers(stcb, false);
4761 /* Now the read queue needs to be cleaned up (only once) */
4762 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0) {
4763 SCTP_ADD_SUBSTATE(stcb, SCTP_STATE_ABOUT_TO_BE_FREED);
4764 SCTP_INP_READ_LOCK(inp);
4765 TAILQ_FOREACH(sq, &inp->read_queue, next) {
4766 if (sq->stcb == stcb) {
4767 sq->do_not_ref_stcb = 1;
4768 sq->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
4769 /*
4770 * If there is no end, there never will be
4771 * now.
4772 */
4773 if (sq->end_added == 0) {
4774 /* Held for PD-API clear that. */
4775 sq->pdapi_aborted = 1;
4776 sq->held_length = 0;
4777 if (sctp_stcb_is_feature_on(inp, stcb, SCTP_PCB_FLAGS_PDAPIEVNT) && (so != NULL)) {
4778 /*
4779 * Need to add a PD-API
4780 * aborted indication.
4781 * Setting the control_pdapi
4782 * assures that it will be
4783 * added right after this
4784 * msg.
4785 */
4786 uint32_t strseq;
4787
4788 stcb->asoc.control_pdapi = sq;
4789 strseq = (sq->sinfo_stream << 16) | (sq->mid & 0x0000ffff);
4790 sctp_ulp_notify(SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION,
4791 stcb,
4792 SCTP_PARTIAL_DELIVERY_ABORTED,
4793 (void *)&strseq,
4794 SCTP_SO_LOCKED);
4795 stcb->asoc.control_pdapi = NULL;
4796 }
4797 }
4798 /* Add an end to wake them */
4799 sq->end_added = 1;
4800 }
4801 }
4802 SCTP_INP_READ_UNLOCK(inp);
4803 if (stcb->block_entry) {
4804 SCTP_LTRACE_ERR_RET(inp, stcb, NULL, SCTP_FROM_SCTP_PCB, ECONNRESET);
4805 stcb->block_entry->error = ECONNRESET;
4806 stcb->block_entry = NULL;
4807 }
4808 }
4809 if ((stcb->asoc.refcnt) || (stcb->asoc.state & SCTP_STATE_IN_ACCEPT_QUEUE)) {
4810 /*
4811 * Someone holds a reference OR the socket is unaccepted
4812 * yet.
4813 */
4814 if ((stcb->asoc.refcnt) ||
4815 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4816 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4817 SCTP_CLEAR_SUBSTATE(stcb, SCTP_STATE_IN_ACCEPT_QUEUE);
4818 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4819 }
4820 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4821 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4822 /* nothing around */
4823 so = NULL;
4824 if (so) {
4825 /* Wake any reader/writers */
4826 sctp_sorwakeup(inp, so);
4827 sctp_sowwakeup(inp, so);
4828 }
4829 SCTP_TCB_SEND_UNLOCK(stcb);
4830 SCTP_TCB_UNLOCK(stcb);
4831
4832#ifdef SCTP_LOG_CLOSING
4833 sctp_log_closing(inp, stcb, 9);
4834#endif
4835 /* no asoc destroyed */
4836 return (0);
4837 }
4838#ifdef SCTP_LOG_CLOSING
4839 sctp_log_closing(inp, stcb, 10);
4840#endif
4841 /*
4842 * When I reach here, no others want to kill the assoc yet.. and I
4843 * own the lock. Now its possible an abort comes in when I do the
4844 * lock exchange below to grab all the locks to do the final take
4845 * out. to prevent this we increment the count, which will start a
4846 * timer and blow out above thus assuring us that we hold exclusive
4847 * killing of the asoc. Note that after getting back the TCB lock we
4848 * will go ahead and increment the counter back up and stop any
4849 * timer a passing stranger may have started :-S
4850 */
4851 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4852 atomic_add_int(&stcb->asoc.refcnt, 1);
4853
4854 SCTP_TCB_SEND_UNLOCK(stcb);
4855 SCTP_TCB_UNLOCK(stcb);
4856 SCTP_INP_INFO_WLOCK();
4857 SCTP_INP_WLOCK(inp);
4858 SCTP_TCB_LOCK(stcb);
4859 SCTP_TCB_SEND_LOCK(stcb);
4860 }
4861 /* Double check the GONE flag */
4862 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4863 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE))
4864 /* nothing around */
4865 so = NULL;
4866
4867 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
4868 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
4869 /*
4870 * For TCP type we need special handling when we are
4871 * connected. We also include the peel'ed off ones to.
4872 */
4873 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) {
4874 inp->sctp_flags &= ~SCTP_PCB_FLAGS_CONNECTED;
4875 inp->sctp_flags |= SCTP_PCB_FLAGS_WAS_CONNECTED;
4876 if (so) {
4877 SOCKBUF_LOCK(&so->so_rcv);
4878 so->so_state &= ~(SS_ISCONNECTING |
4879 SS_ISDISCONNECTING |
4880 SS_ISCONFIRMING |
4881 SS_ISCONNECTED);
4882 so->so_state |= SS_ISDISCONNECTED;
4883 socantrcvmore_locked(so);
4884 socantsendmore(so);
4885 sctp_sowwakeup(inp, so);
4886 sctp_sorwakeup(inp, so);
4887 SCTP_SOWAKEUP(so);
4888 }
4889 }
4890 }
4891
4892 /*
4893 * Make it invalid too, that way if its about to run it will abort
4894 * and return.
4895 */
4896 /* re-increment the lock */
4897 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4898 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4899 }
4900 if (stcb->asoc.refcnt) {
4901 SCTP_CLEAR_SUBSTATE(stcb, SCTP_STATE_IN_ACCEPT_QUEUE);
4902 sctp_timer_start(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL);
4903 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4904 SCTP_INP_INFO_WUNLOCK();
4905 SCTP_INP_WUNLOCK(inp);
4906 }
4907 SCTP_TCB_SEND_UNLOCK(stcb);
4908 SCTP_TCB_UNLOCK(stcb);
4909 return (0);
4910 }
4911 asoc->state = 0;
4912 if (inp->sctp_tcbhash) {
4913 LIST_REMOVE(stcb, sctp_tcbhash);
4914 }
4915 if (stcb->asoc.in_asocid_hash) {
4916 LIST_REMOVE(stcb, sctp_tcbasocidhash);
4917 }
4918 if (inp->sctp_socket == NULL) {
4919 stcb->sctp_socket = NULL;
4920 }
4921 /* Now lets remove it from the list of ALL associations in the EP */
4922 LIST_REMOVE(stcb, sctp_tcblist);
4923 if (from_inpcbfree == SCTP_NORMAL_PROC) {
4924 SCTP_INP_INCR_REF(inp);
4925 SCTP_INP_WUNLOCK(inp);
4926 }
4927 /* pull from vtag hash */
4928 LIST_REMOVE(stcb, sctp_asocs);
4929 sctp_add_vtag_to_timewait(asoc->my_vtag, inp->sctp_lport, stcb->rport);
4930
4931 /*
4932 * Now restop the timers to be sure this is paranoia at is finest!
4933 */
4934 sctp_stop_association_timers(stcb, true);
4935
4936 /*
4937 * The chunk lists and such SHOULD be empty but we check them just
4938 * in case.
4939 */
4940 /* anything on the wheel needs to be removed */
4941 for (i = 0; i < asoc->streamoutcnt; i++) {
4942 struct sctp_stream_out *outs;
4943
4944 outs = &asoc->strmout[i];
4945 /* now clean up any chunks here */
4946 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
4947 atomic_subtract_int(&asoc->stream_queue_cnt, 1);
4948 TAILQ_REMOVE(&outs->outqueue, sp, next);
4949 stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp);
4950 sctp_free_spbufspace(stcb, asoc, sp);
4951 if (sp->data) {
4952 if (so) {
4953 /* Still an open socket - report */
4954 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
4955 0, (void *)sp, SCTP_SO_LOCKED);
4956 }
4957 if (sp->data) {
4958 sctp_m_freem(sp->data);
4959 sp->data = NULL;
4960 sp->tail_mbuf = NULL;
4961 sp->length = 0;
4962 }
4963 }
4964 if (sp->net) {
4965 sctp_free_remote_addr(sp->net);
4966 sp->net = NULL;
4967 }
4968 sctp_free_a_strmoq(stcb, sp, SCTP_SO_LOCKED);
4969 }
4970 }
4971 /* sa_ignore FREED_MEMORY */
4972 TAILQ_FOREACH_SAFE(strrst, &asoc->resetHead, next_resp, nstrrst) {
4973 TAILQ_REMOVE(&asoc->resetHead, strrst, next_resp);
4974 SCTP_FREE(strrst, SCTP_M_STRESET);
4975 }
4976 TAILQ_FOREACH_SAFE(sq, &asoc->pending_reply_queue, next, nsq) {
4977 TAILQ_REMOVE(&asoc->pending_reply_queue, sq, next);
4978 if (sq->data) {
4979 sctp_m_freem(sq->data);
4980 sq->data = NULL;
4981 }
4982 sctp_free_remote_addr(sq->whoFrom);
4983 sq->whoFrom = NULL;
4984 sq->stcb = NULL;
4985 /* Free the ctl entry */
4986 sctp_free_a_readq(stcb, sq);
4987 /* sa_ignore FREED_MEMORY */
4988 }
4989 TAILQ_FOREACH_SAFE(chk, &asoc->free_chunks, sctp_next, nchk) {
4990 TAILQ_REMOVE(&asoc->free_chunks, chk, sctp_next);
4991 if (chk->data) {
4992 sctp_m_freem(chk->data);
4993 chk->data = NULL;
4994 }
4995 if (chk->holds_key_ref)
4996 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
4997 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
4998 SCTP_DECR_CHK_COUNT();
4999 atomic_subtract_int(&SCTP_BASE_INFO(ipi_free_chunks), 1);
5000 asoc->free_chunk_cnt--;
5001 /* sa_ignore FREED_MEMORY */
5002 }
5003 /* pending send queue SHOULD be empty */
5004 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
5005 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
5006 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
5007#ifdef INVARIANTS
5008 } else {
5009 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
5010#endif
5011 }
5012 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
5013 if (chk->data) {
5014 if (so) {
5015 /* Still a socket? */
5016 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
5017 0, chk, SCTP_SO_LOCKED);
5018 }
5019 if (chk->data) {
5020 sctp_m_freem(chk->data);
5021 chk->data = NULL;
5022 }
5023 }
5024 if (chk->holds_key_ref)
5025 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5026 if (chk->whoTo) {
5027 sctp_free_remote_addr(chk->whoTo);
5028 chk->whoTo = NULL;
5029 }
5030 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5031 SCTP_DECR_CHK_COUNT();
5032 /* sa_ignore FREED_MEMORY */
5033 }
5034 /* sent queue SHOULD be empty */
5035 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
5036 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
5037 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
5038 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
5039#ifdef INVARIANTS
5040 } else {
5041 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
5042#endif
5043 }
5044 }
5045 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
5046 if (chk->data) {
5047 if (so) {
5048 /* Still a socket? */
5049 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
5050 0, chk, SCTP_SO_LOCKED);
5051 }
5052 if (chk->data) {
5053 sctp_m_freem(chk->data);
5054 chk->data = NULL;
5055 }
5056 }
5057 if (chk->holds_key_ref)
5058 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5059 sctp_free_remote_addr(chk->whoTo);
5060 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5061 SCTP_DECR_CHK_COUNT();
5062 /* sa_ignore FREED_MEMORY */
5063 }
5064#ifdef INVARIANTS
5065 for (i = 0; i < stcb->asoc.streamoutcnt; i++) {
5066 if (stcb->asoc.strmout[i].chunks_on_queues > 0) {
5067 panic("%u chunks left for stream %u.", stcb->asoc.strmout[i].chunks_on_queues, i);
5068 }
5069 }
5070#endif
5071 /* control queue MAY not be empty */
5072 TAILQ_FOREACH_SAFE(chk, &asoc->control_send_queue, sctp_next, nchk) {
5073 TAILQ_REMOVE(&asoc->control_send_queue, chk, sctp_next);
5074 if (chk->data) {
5075 sctp_m_freem(chk->data);
5076 chk->data = NULL;
5077 }
5078 if (chk->holds_key_ref)
5079 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5080 sctp_free_remote_addr(chk->whoTo);
5081 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5082 SCTP_DECR_CHK_COUNT();
5083 /* sa_ignore FREED_MEMORY */
5084 }
5085 /* ASCONF queue MAY not be empty */
5086 TAILQ_FOREACH_SAFE(chk, &asoc->asconf_send_queue, sctp_next, nchk) {
5087 TAILQ_REMOVE(&asoc->asconf_send_queue, chk, sctp_next);
5088 if (chk->data) {
5089 sctp_m_freem(chk->data);
5090 chk->data = NULL;
5091 }
5092 if (chk->holds_key_ref)
5093 sctp_auth_key_release(stcb, chk->auth_keyid, SCTP_SO_LOCKED);
5094 sctp_free_remote_addr(chk->whoTo);
5095 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_chunk), chk);
5096 SCTP_DECR_CHK_COUNT();
5097 /* sa_ignore FREED_MEMORY */
5098 }
5099 if (asoc->mapping_array) {
5100 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
5101 asoc->mapping_array = NULL;
5102 }
5103 if (asoc->nr_mapping_array) {
5104 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
5105 asoc->nr_mapping_array = NULL;
5106 }
5107 /* the stream outs */
5108 if (asoc->strmout) {
5109 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
5110 asoc->strmout = NULL;
5111 }
5112 asoc->strm_realoutsize = asoc->streamoutcnt = 0;
5113 if (asoc->strmin) {
5114 for (i = 0; i < asoc->streamincnt; i++) {
5115 sctp_clean_up_stream(stcb, &asoc->strmin[i].inqueue);
5116 sctp_clean_up_stream(stcb, &asoc->strmin[i].uno_inqueue);
5117 }
5118 SCTP_FREE(asoc->strmin, SCTP_M_STRMI);
5119 asoc->strmin = NULL;
5120 }
5121 asoc->streamincnt = 0;
5122 TAILQ_FOREACH_SAFE(net, &asoc->nets, sctp_next, nnet) {
5123#ifdef INVARIANTS
5124 if (SCTP_BASE_INFO(ipi_count_raddr) == 0) {
5125 panic("no net's left alloc'ed, or list points to itself");
5126 }
5127#endif
5128 TAILQ_REMOVE(&asoc->nets, net, sctp_next);
5129 sctp_free_remote_addr(net);
5130 }
5131 LIST_FOREACH_SAFE(laddr, &asoc->sctp_restricted_addrs, sctp_nxt_addr, naddr) {
5132 /* sa_ignore FREED_MEMORY */
5133 sctp_remove_laddr(laddr);
5134 }
5135
5136 /* pending asconf (address) parameters */
5137 TAILQ_FOREACH_SAFE(aparam, &asoc->asconf_queue, next, naparam) {
5138 /* sa_ignore FREED_MEMORY */
5139 TAILQ_REMOVE(&asoc->asconf_queue, aparam, next);
5140 SCTP_FREE(aparam, SCTP_M_ASC_ADDR);
5141 }
5142 TAILQ_FOREACH_SAFE(aack, &asoc->asconf_ack_sent, next, naack) {
5143 /* sa_ignore FREED_MEMORY */
5144 TAILQ_REMOVE(&asoc->asconf_ack_sent, aack, next);
5145 if (aack->data != NULL) {
5146 sctp_m_freem(aack->data);
5147 }
5148 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asconf_ack), aack);
5149 }
5150 /* clean up auth stuff */
5151 if (asoc->local_hmacs)
5152 sctp_free_hmaclist(asoc->local_hmacs);
5153 if (asoc->peer_hmacs)
5154 sctp_free_hmaclist(asoc->peer_hmacs);
5155
5156 if (asoc->local_auth_chunks)
5157 sctp_free_chunklist(asoc->local_auth_chunks);
5158 if (asoc->peer_auth_chunks)
5159 sctp_free_chunklist(asoc->peer_auth_chunks);
5160
5161 sctp_free_authinfo(&asoc->authinfo);
5162
5163 LIST_FOREACH_SAFE(shared_key, &asoc->shared_keys, next, nshared_key) {
5164 LIST_REMOVE(shared_key, next);
5165 sctp_free_sharedkey(shared_key);
5166 /* sa_ignore FREED_MEMORY */
5167 }
5168
5169 /* Insert new items here :> */
5170
5171 /* Get rid of LOCK */
5172 SCTP_TCB_SEND_UNLOCK(stcb);
5173 SCTP_TCB_UNLOCK(stcb);
5174 SCTP_TCB_LOCK_DESTROY(stcb);
5175 SCTP_TCB_SEND_LOCK_DESTROY(stcb);
5176 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5177 SCTP_INP_INFO_WUNLOCK();
5178 SCTP_INP_RLOCK(inp);
5179 }
5180#ifdef SCTP_TRACK_FREED_ASOCS
5181 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5182 /* now clean up the tasoc itself */
5183 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5184 SCTP_DECR_ASOC_COUNT();
5185 } else {
5186 LIST_INSERT_HEAD(&inp->sctp_asoc_free_list, stcb, sctp_tcblist);
5187 }
5188#else
5189 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_asoc), stcb);
5190 SCTP_DECR_ASOC_COUNT();
5191#endif
5192 if (from_inpcbfree == SCTP_NORMAL_PROC) {
5193 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5194 /*
5195 * If its NOT the inp_free calling us AND sctp_close
5196 * as been called, we call back...
5197 */
5198 SCTP_INP_RUNLOCK(inp);
5199 /*
5200 * This will start the kill timer (if we are the
5201 * last one) since we hold an increment yet. But
5202 * this is the only safe way to do this since
5203 * otherwise if the socket closes at the same time
5204 * we are here we might collide in the cleanup.
5205 */
5206 sctp_inpcb_free(inp,
5207 SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE,
5208 SCTP_CALLED_DIRECTLY_NOCMPSET);
5209 SCTP_INP_DECR_REF(inp);
5210 } else {
5211 /* The socket is still open. */
5212 SCTP_INP_DECR_REF(inp);
5213 SCTP_INP_RUNLOCK(inp);
5214 }
5215 }
5216 /* destroyed the asoc */
5217#ifdef SCTP_LOG_CLOSING
5218 sctp_log_closing(inp, NULL, 11);
5219#endif
5220 return (1);
5221}
5222
5223/*
5224 * determine if a destination is "reachable" based upon the addresses bound
5225 * to the current endpoint (e.g. only v4 or v6 currently bound)
5226 */
5227/*
5228 * FIX: if we allow assoc-level bindx(), then this needs to be fixed to use
5229 * assoc level v4/v6 flags, as the assoc *may* not have the same address
5230 * types bound as its endpoint
5231 */
5232int
5233sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
5234{
5235 struct sctp_inpcb *inp;
5236 int answer;
5237
5238 /*
5239 * No locks here, the TCB, in all cases is already locked and an
5240 * assoc is up. There is either a INP lock by the caller applied (in
5241 * asconf case when deleting an address) or NOT in the HB case,
5242 * however if HB then the INP increment is up and the INP will not
5243 * be removed (on top of the fact that we have a TCB lock). So we
5244 * only want to read the sctp_flags, which is either bound-all or
5245 * not.. no protection needed since once an assoc is up you can't be
5246 * changing your binding.
5247 */
5248 inp = stcb->sctp_ep;
5249 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5250 /* if bound all, destination is not restricted */
5251 /*
5252 * RRS: Question during lock work: Is this correct? If you
5253 * are bound-all you still might need to obey the V4--V6
5254 * flags??? IMO this bound-all stuff needs to be removed!
5255 */
5256 return (1);
5257 }
5258 /* NOTE: all "scope" checks are done when local addresses are added */
5259 switch (destaddr->sa_family) {
5260#ifdef INET6
5261 case AF_INET6:
5262 answer = inp->ip_inp.inp.inp_vflag & INP_IPV6;
5263 break;
5264#endif
5265#ifdef INET
5266 case AF_INET:
5267 answer = inp->ip_inp.inp.inp_vflag & INP_IPV4;
5268 break;
5269#endif
5270 default:
5271 /* invalid family, so it's unreachable */
5272 answer = 0;
5273 break;
5274 }
5275 return (answer);
5276}
5277
5278/*
5279 * update the inp_vflags on an endpoint
5280 */
5281static void
5282sctp_update_ep_vflag(struct sctp_inpcb *inp)
5283{
5284 struct sctp_laddr *laddr;
5285
5286 /* first clear the flag */
5287 inp->ip_inp.inp.inp_vflag = 0;
5288 /* set the flag based on addresses on the ep list */
5289 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5290 if (laddr->ifa == NULL) {
5291 SCTPDBG(SCTP_DEBUG_PCB1, "%s: NULL ifa\n",
5292 __func__);
5293 continue;
5294 }
5295
5296 if (laddr->ifa->localifa_flags & SCTP_BEING_DELETED) {
5297 continue;
5298 }
5299 switch (laddr->ifa->address.sa.sa_family) {
5300#ifdef INET6
5301 case AF_INET6:
5302 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5303 break;
5304#endif
5305#ifdef INET
5306 case AF_INET:
5307 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5308 break;
5309#endif
5310 default:
5311 break;
5312 }
5313 }
5314}
5315
5316/*
5317 * Add the address to the endpoint local address list There is nothing to be
5318 * done if we are bound to all addresses
5319 */
5320void
5321sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
5322{
5323 struct sctp_laddr *laddr;
5324 struct sctp_tcb *stcb;
5325 int fnd, error = 0;
5326
5327 fnd = 0;
5328
5329 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5330 /* You are already bound to all. You have it already */
5331 return;
5332 }
5333#ifdef INET6
5334 if (ifa->address.sa.sa_family == AF_INET6) {
5335 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5336 /* Can't bind a non-useable addr. */
5337 return;
5338 }
5339 }
5340#endif
5341 /* first, is it already present? */
5342 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5343 if (laddr->ifa == ifa) {
5344 fnd = 1;
5345 break;
5346 }
5347 }
5348
5349 if (fnd == 0) {
5350 /* Not in the ep list */
5351 error = sctp_insert_laddr(&inp->sctp_addr_list, ifa, action);
5352 if (error != 0)
5353 return;
5354 inp->laddr_count++;
5355 /* update inp_vflag flags */
5356 switch (ifa->address.sa.sa_family) {
5357#ifdef INET6
5358 case AF_INET6:
5359 inp->ip_inp.inp.inp_vflag |= INP_IPV6;
5360 break;
5361#endif
5362#ifdef INET
5363 case AF_INET:
5364 inp->ip_inp.inp.inp_vflag |= INP_IPV4;
5365 break;
5366#endif
5367 default:
5368 break;
5369 }
5370 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5371 sctp_add_local_addr_restricted(stcb, ifa);
5372 }
5373 }
5374 return;
5375}
5376
5377/*
5378 * select a new (hopefully reachable) destination net (should only be used
5379 * when we deleted an ep addr that is the only usable source address to reach
5380 * the destination net)
5381 */
5382static void
5383sctp_select_primary_destination(struct sctp_tcb *stcb)
5384{
5385 struct sctp_nets *net;
5386
5387 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5388 /* for now, we'll just pick the first reachable one we find */
5389 if (net->dest_state & SCTP_ADDR_UNCONFIRMED)
5390 continue;
5391 if (sctp_destination_is_reachable(stcb,
5392 (struct sockaddr *)&net->ro._l_addr)) {
5393 /* found a reachable destination */
5394 stcb->asoc.primary_destination = net;
5395 }
5396 }
5397 /* I can't there from here! ...we're gonna die shortly... */
5398}
5399
5400/*
5401 * Delete the address from the endpoint local address list. There is nothing
5402 * to be done if we are bound to all addresses
5403 */
5404void
5405sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
5406{
5407 struct sctp_laddr *laddr;
5408 int fnd;
5409
5410 fnd = 0;
5411 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
5412 /* You are already bound to all. You have it already */
5413 return;
5414 }
5415 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5416 if (laddr->ifa == ifa) {
5417 fnd = 1;
5418 break;
5419 }
5420 }
5421 if (fnd && (inp->laddr_count < 2)) {
5422 /* can't delete unless there are at LEAST 2 addresses */
5423 return;
5424 }
5425 if (fnd) {
5426 /*
5427 * clean up any use of this address go through our
5428 * associations and clear any last_used_address that match
5429 * this one for each assoc, see if a new primary_destination
5430 * is needed
5431 */
5432 struct sctp_tcb *stcb;
5433
5434 /* clean up "next_addr_touse" */
5435 if (inp->next_addr_touse == laddr)
5436 /* delete this address */
5437 inp->next_addr_touse = NULL;
5438
5439 /* clean up "last_used_address" */
5440 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
5441 struct sctp_nets *net;
5442
5443 SCTP_TCB_LOCK(stcb);
5444 if (stcb->asoc.last_used_address == laddr)
5445 /* delete this address */
5446 stcb->asoc.last_used_address = NULL;
5447 /*
5448 * Now spin through all the nets and purge any ref
5449 * to laddr
5450 */
5451 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
5452 if (net->ro._s_addr == laddr->ifa) {
5453 /* Yep, purge src address selected */
5454 RO_NHFREE(&net->ro);
5455 sctp_free_ifa(net->ro._s_addr);
5456 net->ro._s_addr = NULL;
5457 net->src_addr_selected = 0;
5458 }
5459 }
5460 SCTP_TCB_UNLOCK(stcb);
5461 } /* for each tcb */
5462 /* remove it from the ep list */
5463 sctp_remove_laddr(laddr);
5464 inp->laddr_count--;
5465 /* update inp_vflag flags */
5466 sctp_update_ep_vflag(inp);
5467 }
5468 return;
5469}
5470
5471/*
5472 * Add the address to the TCB local address restricted list.
5473 * This is a "pending" address list (eg. addresses waiting for an
5474 * ASCONF-ACK response) and cannot be used as a valid source address.
5475 */
5476void
5477sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5478{
5479 struct sctp_laddr *laddr;
5480 struct sctpladdr *list;
5481
5482 /*
5483 * Assumes TCB is locked.. and possibly the INP. May need to
5484 * confirm/fix that if we need it and is not the case.
5485 */
5486 list = &stcb->asoc.sctp_restricted_addrs;
5487
5488#ifdef INET6
5489 if (ifa->address.sa.sa_family == AF_INET6) {
5490 if (ifa->localifa_flags & SCTP_ADDR_IFA_UNUSEABLE) {
5491 /* Can't bind a non-existent addr. */
5492 return;
5493 }
5494 }
5495#endif
5496 /* does the address already exist? */
5497 LIST_FOREACH(laddr, list, sctp_nxt_addr) {
5498 if (laddr->ifa == ifa) {
5499 return;
5500 }
5501 }
5502
5503 /* add to the list */
5504 (void)sctp_insert_laddr(list, ifa, 0);
5505 return;
5506}
5507
5508/*
5509 * Remove a local address from the TCB local address restricted list
5510 */
5511void
5512sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
5513{
5514 struct sctp_inpcb *inp;
5515 struct sctp_laddr *laddr;
5516
5517 /*
5518 * This is called by asconf work. It is assumed that a) The TCB is
5519 * locked and b) The INP is locked. This is true in as much as I can
5520 * trace through the entry asconf code where I did these locks.
5521 * Again, the ASCONF code is a bit different in that it does lock
5522 * the INP during its work often times. This must be since we don't
5523 * want other proc's looking up things while what they are looking
5524 * up is changing :-D
5525 */
5526
5527 inp = stcb->sctp_ep;
5528 /* if subset bound and don't allow ASCONF's, can't delete last */
5529 if (((inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) == 0) &&
5530 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_DO_ASCONF)) {
5531 if (stcb->sctp_ep->laddr_count < 2) {
5532 /* can't delete last address */
5533 return;
5534 }
5535 }
5536 LIST_FOREACH(laddr, &stcb->asoc.sctp_restricted_addrs, sctp_nxt_addr) {
5537 /* remove the address if it exists */
5538 if (laddr->ifa == NULL)
5539 continue;
5540 if (laddr->ifa == ifa) {
5541 sctp_remove_laddr(laddr);
5542 return;
5543 }
5544 }
5545
5546 /* address not found! */
5547 return;
5548}
5549
5550/* sysctl */
5551static int sctp_max_number_of_assoc = SCTP_MAX_NUM_OF_ASOC;
5552static int sctp_scale_up_for_address = SCTP_SCALE_FOR_ADDR;
5553
5554#if defined(SCTP_MCORE_INPUT) && defined(SMP)
5555struct sctp_mcore_ctrl *sctp_mcore_workers = NULL;
5556int *sctp_cpuarry = NULL;
5557
5558void
5559sctp_queue_to_mcore(struct mbuf *m, int off, int cpu_to_use)
5560{
5561 /* Queue a packet to a processor for the specified core */
5562 struct sctp_mcore_queue *qent;
5563 struct sctp_mcore_ctrl *wkq;
5564 int need_wake = 0;
5565
5566 if (sctp_mcore_workers == NULL) {
5567 /* Something went way bad during setup */
5568 sctp_input_with_port(m, off, 0);
5569 return;
5570 }
5571 SCTP_MALLOC(qent, struct sctp_mcore_queue *,
5572 (sizeof(struct sctp_mcore_queue)),
5573 SCTP_M_MCORE);
5574 if (qent == NULL) {
5575 /* This is trouble */
5576 sctp_input_with_port(m, off, 0);
5577 return;
5578 }
5579 qent->vn = curvnet;
5580 qent->m = m;
5581 qent->off = off;
5582 qent->v6 = 0;
5583 wkq = &sctp_mcore_workers[cpu_to_use];
5584 SCTP_MCORE_QLOCK(wkq);
5585
5586 TAILQ_INSERT_TAIL(&wkq->que, qent, next);
5587 if (wkq->running == 0) {
5588 need_wake = 1;
5589 }
5590 SCTP_MCORE_QUNLOCK(wkq);
5591 if (need_wake) {
5592 wakeup(&wkq->running);
5593 }
5594}
5595
5596static void
5597sctp_mcore_thread(void *arg)
5598{
5599
5600 struct sctp_mcore_ctrl *wkq;
5601 struct sctp_mcore_queue *qent;
5602
5603 wkq = (struct sctp_mcore_ctrl *)arg;
5604 struct mbuf *m;
5605 int off, v6;
5606
5607 /* Wait for first tickle */
5608 SCTP_MCORE_LOCK(wkq);
5609 wkq->running = 0;
5610 msleep(&wkq->running,
5611 &wkq->core_mtx,
5612 0, "wait for pkt", 0);
5613 SCTP_MCORE_UNLOCK(wkq);
5614
5615 /* Bind to our cpu */
5616 thread_lock(curthread);
5617 sched_bind(curthread, wkq->cpuid);
5618 thread_unlock(curthread);
5619
5620 /* Now lets start working */
5621 SCTP_MCORE_LOCK(wkq);
5622 /* Now grab lock and go */
5623 for (;;) {
5624 SCTP_MCORE_QLOCK(wkq);
5625skip_sleep:
5626 wkq->running = 1;
5627 qent = TAILQ_FIRST(&wkq->que);
5628 if (qent) {
5629 TAILQ_REMOVE(&wkq->que, qent, next);
5630 SCTP_MCORE_QUNLOCK(wkq);
5631 CURVNET_SET(qent->vn);
5632 m = qent->m;
5633 off = qent->off;
5634 v6 = qent->v6;
5635 SCTP_FREE(qent, SCTP_M_MCORE);
5636 if (v6 == 0) {
5637 sctp_input_with_port(m, off, 0);
5638 } else {
5639 SCTP_PRINTF("V6 not yet supported\n");
5640 sctp_m_freem(m);
5641 }
5642 CURVNET_RESTORE();
5643 SCTP_MCORE_QLOCK(wkq);
5644 }
5645 wkq->running = 0;
5646 if (!TAILQ_EMPTY(&wkq->que)) {
5647 goto skip_sleep;
5648 }
5649 SCTP_MCORE_QUNLOCK(wkq);
5650 msleep(&wkq->running,
5651 &wkq->core_mtx,
5652 0, "wait for pkt", 0);
5653 }
5654}
5655
5656static void
5657sctp_startup_mcore_threads(void)
5658{
5659 int i, cpu;
5660
5661 if (mp_ncpus == 1)
5662 return;
5663
5664 if (sctp_mcore_workers != NULL) {
5665 /*
5666 * Already been here in some previous vnet?
5667 */
5668 return;
5669 }
5670 SCTP_MALLOC(sctp_mcore_workers, struct sctp_mcore_ctrl *,
5671 ((mp_maxid + 1) * sizeof(struct sctp_mcore_ctrl)),
5672 SCTP_M_MCORE);
5673 if (sctp_mcore_workers == NULL) {
5674 /* TSNH I hope */
5675 return;
5676 }
5677 memset(sctp_mcore_workers, 0, ((mp_maxid + 1) *
5678 sizeof(struct sctp_mcore_ctrl)));
5679 /* Init the structures */
5680 for (i = 0; i <= mp_maxid; i++) {
5681 TAILQ_INIT(&sctp_mcore_workers[i].que);
5682 SCTP_MCORE_LOCK_INIT(&sctp_mcore_workers[i]);
5683 SCTP_MCORE_QLOCK_INIT(&sctp_mcore_workers[i]);
5684 sctp_mcore_workers[i].cpuid = i;
5685 }
5686 if (sctp_cpuarry == NULL) {
5687 SCTP_MALLOC(sctp_cpuarry, int *,
5688 (mp_ncpus * sizeof(int)),
5689 SCTP_M_MCORE);
5690 i = 0;
5691 CPU_FOREACH(cpu) {
5692 sctp_cpuarry[i] = cpu;
5693 i++;
5694 }
5695 }
5696 /* Now start them all */
5697 CPU_FOREACH(cpu) {
5698 (void)kproc_create(sctp_mcore_thread,
5699 (void *)&sctp_mcore_workers[cpu],
5700 &sctp_mcore_workers[cpu].thread_proc,
5701 0,
5702 SCTP_KTHREAD_PAGES,
5703 SCTP_MCORE_NAME);
5704 }
5705}
5706#endif
5707
5708void
5709sctp_pcb_init(void)
5710{
5711 /*
5712 * SCTP initialization for the PCB structures should be called by
5713 * the sctp_init() function.
5714 */
5715 int i;
5716 struct timeval tv;
5717
5718 if (SCTP_BASE_VAR(sctp_pcb_initialized) != 0) {
5719 /* error I was called twice */
5720 return;
5721 }
5722 SCTP_BASE_VAR(sctp_pcb_initialized) = 1;
5723
5724#if defined(SCTP_LOCAL_TRACE_BUF)
5725 memset(&SCTP_BASE_SYSCTL(sctp_log), 0, sizeof(struct sctp_log));
5726#endif
5727#if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5728 SCTP_MALLOC(SCTP_BASE_STATS, struct sctpstat *,
5729 ((mp_maxid + 1) * sizeof(struct sctpstat)),
5730 SCTP_M_MCORE);
5731#endif
5732 (void)SCTP_GETTIME_TIMEVAL(&tv);
5733#if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5734 memset(SCTP_BASE_STATS, 0, sizeof(struct sctpstat) * (mp_maxid + 1));
5735 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_sec = (uint32_t)tv.tv_sec;
5736 SCTP_BASE_STATS[PCPU_GET(cpuid)].sctps_discontinuitytime.tv_usec = (uint32_t)tv.tv_usec;
5737#else
5738 memset(&SCTP_BASE_STATS, 0, sizeof(struct sctpstat));
5739 SCTP_BASE_STAT(sctps_discontinuitytime).tv_sec = (uint32_t)tv.tv_sec;
5740 SCTP_BASE_STAT(sctps_discontinuitytime).tv_usec = (uint32_t)tv.tv_usec;
5741#endif
5742 /* init the empty list of (All) Endpoints */
5743 LIST_INIT(&SCTP_BASE_INFO(listhead));
5744
5745 /* init the hash table of endpoints */
5746 TUNABLE_INT_FETCH("net.inet.sctp.tcbhashsize", &SCTP_BASE_SYSCTL(sctp_hashtblsize));
5747 TUNABLE_INT_FETCH("net.inet.sctp.pcbhashsize", &SCTP_BASE_SYSCTL(sctp_pcbtblsize));
5748 TUNABLE_INT_FETCH("net.inet.sctp.chunkscale", &SCTP_BASE_SYSCTL(sctp_chunkscale));
5749 SCTP_BASE_INFO(sctp_asochash) = SCTP_HASH_INIT((SCTP_BASE_SYSCTL(sctp_hashtblsize) * 31),
5750 &SCTP_BASE_INFO(hashasocmark));
5751 SCTP_BASE_INFO(sctp_ephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5752 &SCTP_BASE_INFO(hashmark));
5753 SCTP_BASE_INFO(sctp_tcpephash) = SCTP_HASH_INIT(SCTP_BASE_SYSCTL(sctp_hashtblsize),
5754 &SCTP_BASE_INFO(hashtcpmark));
5755 SCTP_BASE_INFO(hashtblsize) = SCTP_BASE_SYSCTL(sctp_hashtblsize);
5756 SCTP_BASE_INFO(sctp_vrfhash) = SCTP_HASH_INIT(SCTP_SIZE_OF_VRF_HASH,
5757 &SCTP_BASE_INFO(hashvrfmark));
5758
5759 SCTP_BASE_INFO(vrf_ifn_hash) = SCTP_HASH_INIT(SCTP_VRF_IFN_HASH_SIZE,
5760 &SCTP_BASE_INFO(vrf_ifn_hashmark));
5761 /* init the zones */
5762 /*
5763 * FIX ME: Should check for NULL returns, but if it does fail we are
5764 * doomed to panic anyways... add later maybe.
5765 */
5766 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_ep), "sctp_ep",
5767 sizeof(struct sctp_inpcb), maxsockets);
5768
5769 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asoc), "sctp_asoc",
5770 sizeof(struct sctp_tcb), sctp_max_number_of_assoc);
5771
5772 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_laddr), "sctp_laddr",
5773 sizeof(struct sctp_laddr),
5774 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5775
5776 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_net), "sctp_raddr",
5777 sizeof(struct sctp_nets),
5778 (sctp_max_number_of_assoc * sctp_scale_up_for_address));
5779
5780 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_chunk), "sctp_chunk",
5781 sizeof(struct sctp_tmit_chunk),
5782 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5783
5784 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_readq), "sctp_readq",
5785 sizeof(struct sctp_queued_to_read),
5786 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5787
5788 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_strmoq), "sctp_stream_msg_out",
5789 sizeof(struct sctp_stream_queue_pending),
5790 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5791
5792 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf), "sctp_asconf",
5793 sizeof(struct sctp_asconf),
5794 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5795
5796 SCTP_ZONE_INIT(SCTP_BASE_INFO(ipi_zone_asconf_ack), "sctp_asconf_ack",
5797 sizeof(struct sctp_asconf_ack),
5798 (sctp_max_number_of_assoc * SCTP_BASE_SYSCTL(sctp_chunkscale)));
5799
5800 /* Master Lock INIT for info structure */
5801 SCTP_INP_INFO_LOCK_INIT();
5802 SCTP_STATLOG_INIT_LOCK();
5803
5804 SCTP_IPI_COUNT_INIT();
5805 SCTP_IPI_ADDR_INIT();
5806#ifdef SCTP_PACKET_LOGGING
5807 SCTP_IP_PKTLOG_INIT();
5808#endif
5809 LIST_INIT(&SCTP_BASE_INFO(addr_wq));
5810
5811 SCTP_WQ_ADDR_INIT();
5812 /* not sure if we need all the counts */
5813 SCTP_BASE_INFO(ipi_count_ep) = 0;
5814 /* assoc/tcb zone info */
5815 SCTP_BASE_INFO(ipi_count_asoc) = 0;
5816 /* local addrlist zone info */
5817 SCTP_BASE_INFO(ipi_count_laddr) = 0;
5818 /* remote addrlist zone info */
5819 SCTP_BASE_INFO(ipi_count_raddr) = 0;
5820 /* chunk info */
5821 SCTP_BASE_INFO(ipi_count_chunk) = 0;
5822
5823 /* socket queue zone info */
5824 SCTP_BASE_INFO(ipi_count_readq) = 0;
5825
5826 /* stream out queue cont */
5827 SCTP_BASE_INFO(ipi_count_strmoq) = 0;
5828
5829 SCTP_BASE_INFO(ipi_free_strmoq) = 0;
5830 SCTP_BASE_INFO(ipi_free_chunks) = 0;
5831
5832 SCTP_OS_TIMER_INIT(&SCTP_BASE_INFO(addr_wq_timer.timer));
5833
5834 /* Init the TIMEWAIT list */
5835 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5836 LIST_INIT(&SCTP_BASE_INFO(vtag_timewait)[i]);
5837 }
5838 sctp_startup_iterator();
5839
5840#if defined(SCTP_MCORE_INPUT) && defined(SMP)
5841 sctp_startup_mcore_threads();
5842#endif
5843
5844 /*
5845 * INIT the default VRF which for BSD is the only one, other O/S's
5846 * may have more. But initially they must start with one and then
5847 * add the VRF's as addresses are added.
5848 */
5849 sctp_init_vrf_list(SCTP_DEFAULT_VRF);
5850}
5851
5852/*
5853 * Assumes that the SCTP_BASE_INFO() lock is NOT held.
5854 */
5855void
5856sctp_pcb_finish(void)
5857{
5858 struct sctp_vrflist *vrf_bucket;
5859 struct sctp_vrf *vrf, *nvrf;
5860 struct sctp_ifn *ifn, *nifn;
5861 struct sctp_ifa *ifa, *nifa;
5862 struct sctpvtaghead *chain;
5863 struct sctp_tagblock *twait_block, *prev_twait_block;
5864 struct sctp_laddr *wi, *nwi;
5865 int i;
5866 struct sctp_iterator *it, *nit;
5867
5868 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
5869 SCTP_PRINTF("%s: race condition on teardown.\n", __func__);
5870 return;
5871 }
5872 SCTP_BASE_VAR(sctp_pcb_initialized) = 0;
5873 /*
5874 * In FreeBSD the iterator thread never exits but we do clean up.
5875 * The only way FreeBSD reaches here is if we have VRF's but we
5876 * still add the ifdef to make it compile on old versions.
5877 */
5878retry:
5879 SCTP_IPI_ITERATOR_WQ_LOCK();
5880 /*
5881 * sctp_iterator_worker() might be working on an it entry without
5882 * holding the lock. We won't find it on the list either and
5883 * continue and free/destroy it. While holding the lock, spin, to
5884 * avoid the race condition as sctp_iterator_worker() will have to
5885 * wait to re-acquire the lock.
5886 */
5887 if (sctp_it_ctl.iterator_running != 0 || sctp_it_ctl.cur_it != NULL) {
5888 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5889 SCTP_PRINTF("%s: Iterator running while we held the lock. Retry. "
5890 "cur_it=%p\n", __func__, sctp_it_ctl.cur_it);
5891 DELAY(10);
5892 goto retry;
5893 }
5894 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
5895 if (it->vn != curvnet) {
5896 continue;
5897 }
5898 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
5899 if (it->function_atend != NULL) {
5900 (*it->function_atend) (it->pointer, it->val);
5901 }
5902 SCTP_FREE(it, SCTP_M_ITER);
5903 }
5904 SCTP_IPI_ITERATOR_WQ_UNLOCK();
5905 SCTP_ITERATOR_LOCK();
5906 if ((sctp_it_ctl.cur_it) &&
5907 (sctp_it_ctl.cur_it->vn == curvnet)) {
5908 sctp_it_ctl.iterator_flags |= SCTP_ITERATOR_STOP_CUR_IT;
5909 }
5910 SCTP_ITERATOR_UNLOCK();
5911 SCTP_OS_TIMER_STOP_DRAIN(&SCTP_BASE_INFO(addr_wq_timer.timer));
5912 SCTP_WQ_ADDR_LOCK();
5913 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
5914 LIST_REMOVE(wi, sctp_nxt_addr);
5915 SCTP_DECR_LADDR_COUNT();
5916 if (wi->action == SCTP_DEL_IP_ADDRESS) {
5917 SCTP_FREE(wi->ifa, SCTP_M_IFA);
5918 }
5919 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_laddr), wi);
5920 }
5921 SCTP_WQ_ADDR_UNLOCK();
5922
5923 /*
5924 * free the vrf/ifn/ifa lists and hashes (be sure address monitor is
5925 * destroyed first).
5926 */
5927 SCTP_IPI_ADDR_WLOCK();
5928 vrf_bucket = &SCTP_BASE_INFO(sctp_vrfhash)[(SCTP_DEFAULT_VRFID & SCTP_BASE_INFO(hashvrfmark))];
5929 LIST_FOREACH_SAFE(vrf, vrf_bucket, next_vrf, nvrf) {
5930 LIST_FOREACH_SAFE(ifn, &vrf->ifnlist, next_ifn, nifn) {
5931 LIST_FOREACH_SAFE(ifa, &ifn->ifalist, next_ifa, nifa) {
5932 /* free the ifa */
5933 LIST_REMOVE(ifa, next_bucket);
5934 LIST_REMOVE(ifa, next_ifa);
5935 SCTP_FREE(ifa, SCTP_M_IFA);
5936 }
5937 /* free the ifn */
5938 LIST_REMOVE(ifn, next_bucket);
5939 LIST_REMOVE(ifn, next_ifn);
5940 SCTP_FREE(ifn, SCTP_M_IFN);
5941 }
5942 SCTP_HASH_FREE(vrf->vrf_addr_hash, vrf->vrf_addr_hashmark);
5943 /* free the vrf */
5944 LIST_REMOVE(vrf, next_vrf);
5945 SCTP_FREE(vrf, SCTP_M_VRF);
5946 }
5947 SCTP_IPI_ADDR_WUNLOCK();
5948 /* free the vrf hashes */
5949 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_vrfhash), SCTP_BASE_INFO(hashvrfmark));
5950 SCTP_HASH_FREE(SCTP_BASE_INFO(vrf_ifn_hash), SCTP_BASE_INFO(vrf_ifn_hashmark));
5951
5952 /*
5953 * free the TIMEWAIT list elements malloc'd in the function
5954 * sctp_add_vtag_to_timewait()...
5955 */
5956 for (i = 0; i < SCTP_STACK_VTAG_HASH_SIZE; i++) {
5957 chain = &SCTP_BASE_INFO(vtag_timewait)[i];
5958 if (!LIST_EMPTY(chain)) {
5959 prev_twait_block = NULL;
5960 LIST_FOREACH(twait_block, chain, sctp_nxt_tagblock) {
5961 if (prev_twait_block) {
5962 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5963 }
5964 prev_twait_block = twait_block;
5965 }
5966 SCTP_FREE(prev_twait_block, SCTP_M_TIMW);
5967 }
5968 }
5969
5970 /* free the locks and mutexes */
5971#ifdef SCTP_PACKET_LOGGING
5972 SCTP_IP_PKTLOG_DESTROY();
5973#endif
5974 SCTP_IPI_ADDR_DESTROY();
5975 SCTP_STATLOG_DESTROY();
5976 SCTP_INP_INFO_LOCK_DESTROY();
5977
5978 SCTP_WQ_ADDR_DESTROY();
5979
5980 /* Get rid of other stuff too. */
5981 if (SCTP_BASE_INFO(sctp_asochash) != NULL)
5982 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_asochash), SCTP_BASE_INFO(hashasocmark));
5983 if (SCTP_BASE_INFO(sctp_ephash) != NULL)
5984 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_ephash), SCTP_BASE_INFO(hashmark));
5985 if (SCTP_BASE_INFO(sctp_tcpephash) != NULL)
5986 SCTP_HASH_FREE(SCTP_BASE_INFO(sctp_tcpephash), SCTP_BASE_INFO(hashtcpmark));
5987
5988 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_ep));
5989 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asoc));
5990 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_laddr));
5991 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_net));
5992 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_chunk));
5993 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_readq));
5994 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_strmoq));
5995 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf));
5996 SCTP_ZONE_DESTROY(SCTP_BASE_INFO(ipi_zone_asconf_ack));
5997#if defined(SMP) && defined(SCTP_USE_PERCPU_STAT)
5998 SCTP_FREE(SCTP_BASE_STATS, SCTP_M_MCORE);
5999#endif
6000}
6001
6002int
6003sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m,
6004 int offset, int limit,
6005 struct sockaddr *src, struct sockaddr *dst,
6006 struct sockaddr *altsa, uint16_t port)
6007{
6008 /*
6009 * grub through the INIT pulling addresses and loading them to the
6010 * nets structure in the asoc. The from address in the mbuf should
6011 * also be loaded (if it is not already). This routine can be called
6012 * with either INIT or INIT-ACK's as long as the m points to the IP
6013 * packet and the offset points to the beginning of the parameters.
6014 */
6015 struct sctp_inpcb *inp;
6016 struct sctp_nets *net, *nnet, *net_tmp;
6017 struct sctp_paramhdr *phdr, param_buf;
6018 struct sctp_tcb *stcb_tmp;
6019 uint16_t ptype, plen;
6020 struct sockaddr *sa;
6021 uint8_t random_store[SCTP_PARAM_BUFFER_SIZE];
6022 struct sctp_auth_random *p_random = NULL;
6023 uint16_t random_len = 0;
6024 uint8_t hmacs_store[SCTP_PARAM_BUFFER_SIZE];
6025 struct sctp_auth_hmac_algo *hmacs = NULL;
6026 uint16_t hmacs_len = 0;
6027 uint8_t saw_asconf = 0;
6028 uint8_t saw_asconf_ack = 0;
6029 uint8_t chunks_store[SCTP_PARAM_BUFFER_SIZE];
6030 struct sctp_auth_chunk_list *chunks = NULL;
6031 uint16_t num_chunks = 0;
6032 sctp_key_t *new_key;
6033 uint32_t keylen;
6034 int got_random = 0, got_hmacs = 0, got_chklist = 0;
6035 uint8_t peer_supports_ecn;
6036 uint8_t peer_supports_prsctp;
6037 uint8_t peer_supports_auth;
6038 uint8_t peer_supports_asconf;
6039 uint8_t peer_supports_asconf_ack;
6040 uint8_t peer_supports_reconfig;
6041 uint8_t peer_supports_nrsack;
6042 uint8_t peer_supports_pktdrop;
6043 uint8_t peer_supports_idata;
6044#ifdef INET
6045 struct sockaddr_in sin;
6046#endif
6047#ifdef INET6
6048 struct sockaddr_in6 sin6;
6049#endif
6050
6051 /* First get the destination address setup too. */
6052#ifdef INET
6053 memset(&sin, 0, sizeof(sin));
6054 sin.sin_family = AF_INET;
6055 sin.sin_len = sizeof(sin);
6056 sin.sin_port = stcb->rport;
6057#endif
6058#ifdef INET6
6059 memset(&sin6, 0, sizeof(sin6));
6060 sin6.sin6_family = AF_INET6;
6061 sin6.sin6_len = sizeof(struct sockaddr_in6);
6062 sin6.sin6_port = stcb->rport;
6063#endif
6064 if (altsa) {
6065 sa = altsa;
6066 } else {
6067 sa = src;
6068 }
6069 peer_supports_idata = 0;
6070 peer_supports_ecn = 0;
6071 peer_supports_prsctp = 0;
6072 peer_supports_auth = 0;
6073 peer_supports_asconf = 0;
6074 peer_supports_asconf_ack = 0;
6075 peer_supports_reconfig = 0;
6076 peer_supports_nrsack = 0;
6077 peer_supports_pktdrop = 0;
6078 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
6079 /* mark all addresses that we have currently on the list */
6080 net->dest_state |= SCTP_ADDR_NOT_IN_ASSOC;
6081 }
6082 /* does the source address already exist? if so skip it */
6083 inp = stcb->sctp_ep;
6084 atomic_add_int(&stcb->asoc.refcnt, 1);
6085 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net_tmp, dst, stcb);
6086 atomic_subtract_int(&stcb->asoc.refcnt, 1);
6087
6088 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) || inp == NULL) {
6089 /* we must add the source address */
6090 /* no scope set here since we have a tcb already. */
6091 switch (sa->sa_family) {
6092#ifdef INET
6093 case AF_INET:
6094 if (stcb->asoc.scope.ipv4_addr_legal) {
6095 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_2)) {
6096 return (-1);
6097 }
6098 }
6099 break;
6100#endif
6101#ifdef INET6
6102 case AF_INET6:
6103 if (stcb->asoc.scope.ipv6_addr_legal) {
6104 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_3)) {
6105 return (-2);
6106 }
6107 }
6108 break;
6109#endif
6110 default:
6111 break;
6112 }
6113 } else {
6114 if (net_tmp != NULL && stcb_tmp == stcb) {
6115 net_tmp->dest_state &= ~SCTP_ADDR_NOT_IN_ASSOC;
6116 } else if (stcb_tmp != stcb) {
6117 /* It belongs to another association? */
6118 if (stcb_tmp)
6119 SCTP_TCB_UNLOCK(stcb_tmp);
6120 return (-3);
6121 }
6122 }
6123 if (stcb->asoc.state == 0) {
6124 /* the assoc was freed? */
6125 return (-4);
6126 }
6127 /* now we must go through each of the params. */
6128 phdr = sctp_get_next_param(m, offset, &param_buf, sizeof(param_buf));
6129 while (phdr) {
6130 ptype = ntohs(phdr->param_type);
6131 plen = ntohs(phdr->param_length);
6132 /*
6133 * SCTP_PRINTF("ptype => %0x, plen => %d\n",
6134 * (uint32_t)ptype, (int)plen);
6135 */
6136 if (offset + plen > limit) {
6137 break;
6138 }
6139 if (plen < sizeof(struct sctp_paramhdr)) {
6140 break;
6141 }
6142#ifdef INET
6143 if (ptype == SCTP_IPV4_ADDRESS) {
6144 if (stcb->asoc.scope.ipv4_addr_legal) {
6145 struct sctp_ipv4addr_param *p4, p4_buf;
6146
6147 /* ok get the v4 address and check/add */
6148 phdr = sctp_get_next_param(m, offset,
6149 (struct sctp_paramhdr *)&p4_buf,
6150 sizeof(p4_buf));
6151 if (plen != sizeof(struct sctp_ipv4addr_param) ||
6152 phdr == NULL) {
6153 return (-5);
6154 }
6155 p4 = (struct sctp_ipv4addr_param *)phdr;
6156 sin.sin_addr.s_addr = p4->addr;
6157 if (IN_MULTICAST(ntohl(sin.sin_addr.s_addr))) {
6158 /* Skip multi-cast addresses */
6159 goto next_param;
6160 }
6161 if ((sin.sin_addr.s_addr == INADDR_BROADCAST) ||
6162 (sin.sin_addr.s_addr == INADDR_ANY)) {
6163 goto next_param;
6164 }
6165 sa = (struct sockaddr *)&sin;
6166 inp = stcb->sctp_ep;
6167 atomic_add_int(&stcb->asoc.refcnt, 1);
6168 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6169 dst, stcb);
6170 atomic_subtract_int(&stcb->asoc.refcnt, 1);
6171
6172 if ((stcb_tmp == NULL && inp == stcb->sctp_ep) ||
6173 inp == NULL) {
6174 /* we must add the source address */
6175 /*
6176 * no scope set since we have a tcb
6177 * already
6178 */
6179
6180 /*
6181 * we must validate the state again
6182 * here
6183 */
6184 add_it_now:
6185 if (stcb->asoc.state == 0) {
6186 /* the assoc was freed? */
6187 return (-7);
6188 }
6189 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_4)) {
6190 return (-8);
6191 }
6192 } else if (stcb_tmp == stcb) {
6193 if (stcb->asoc.state == 0) {
6194 /* the assoc was freed? */
6195 return (-10);
6196 }
6197 if (net != NULL) {
6198 /* clear flag */
6199 net->dest_state &=
6200 ~SCTP_ADDR_NOT_IN_ASSOC;
6201 }
6202 } else {
6203 /*
6204 * strange, address is in another
6205 * assoc? straighten out locks.
6206 */
6207 if (stcb_tmp) {
6208 if (SCTP_GET_STATE(stcb_tmp) == SCTP_STATE_COOKIE_WAIT) {
6209 struct mbuf *op_err;
6210 char msg[SCTP_DIAG_INFO_LEN];
6211
6212 /*
6213 * in setup state we
6214 * abort this guy
6215 */
6216 SCTP_SNPRINTF(msg, sizeof(msg),
6217 "%s:%d at %s", __FILE__, __LINE__, __func__);
6218 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
6219 msg);
6220 sctp_abort_an_association(stcb_tmp->sctp_ep,
6221 stcb_tmp, op_err, false,
6222 SCTP_SO_NOT_LOCKED);
6223 goto add_it_now;
6224 }
6225 SCTP_TCB_UNLOCK(stcb_tmp);
6226 }
6227
6228 if (stcb->asoc.state == 0) {
6229 /* the assoc was freed? */
6230 return (-12);
6231 }
6232 return (-13);
6233 }
6234 }
6235 } else
6236#endif
6237#ifdef INET6
6238 if (ptype == SCTP_IPV6_ADDRESS) {
6239 if (stcb->asoc.scope.ipv6_addr_legal) {
6240 /* ok get the v6 address and check/add */
6241 struct sctp_ipv6addr_param *p6, p6_buf;
6242
6243 phdr = sctp_get_next_param(m, offset,
6244 (struct sctp_paramhdr *)&p6_buf,
6245 sizeof(p6_buf));
6246 if (plen != sizeof(struct sctp_ipv6addr_param) ||
6247 phdr == NULL) {
6248 return (-14);
6249 }
6250 p6 = (struct sctp_ipv6addr_param *)phdr;
6251 memcpy((caddr_t)&sin6.sin6_addr, p6->addr,
6252 sizeof(p6->addr));
6253 if (IN6_IS_ADDR_MULTICAST(&sin6.sin6_addr)) {
6254 /* Skip multi-cast addresses */
6255 goto next_param;
6256 }
6257 if (IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr)) {
6258 /*
6259 * Link local make no sense without
6260 * scope
6261 */
6262 goto next_param;
6263 }
6264 sa = (struct sockaddr *)&sin6;
6265 inp = stcb->sctp_ep;
6266 atomic_add_int(&stcb->asoc.refcnt, 1);
6267 stcb_tmp = sctp_findassociation_ep_addr(&inp, sa, &net,
6268 dst, stcb);
6269 atomic_subtract_int(&stcb->asoc.refcnt, 1);
6270 if (stcb_tmp == NULL &&
6271 (inp == stcb->sctp_ep || inp == NULL)) {
6272 /*
6273 * we must validate the state again
6274 * here
6275 */
6276 add_it_now6:
6277 if (stcb->asoc.state == 0) {
6278 /* the assoc was freed? */
6279 return (-16);
6280 }
6281 /*
6282 * we must add the address, no scope
6283 * set
6284 */
6285 if (sctp_add_remote_addr(stcb, sa, NULL, port, SCTP_DONOT_SETSCOPE, SCTP_LOAD_ADDR_5)) {
6286 return (-17);
6287 }
6288 } else if (stcb_tmp == stcb) {
6289 /*
6290 * we must validate the state again
6291 * here
6292 */
6293 if (stcb->asoc.state == 0) {
6294 /* the assoc was freed? */
6295 return (-19);
6296 }
6297 if (net != NULL) {
6298 /* clear flag */
6299 net->dest_state &=
6300 ~SCTP_ADDR_NOT_IN_ASSOC;
6301 }
6302 } else {
6303 /*
6304 * strange, address is in another
6305 * assoc? straighten out locks.
6306 */
6307 if (stcb_tmp) {
6308 if (SCTP_GET_STATE(stcb_tmp) == SCTP_STATE_COOKIE_WAIT) {
6309 struct mbuf *op_err;
6310 char msg[SCTP_DIAG_INFO_LEN];
6311
6312 /*
6313 * in setup state we
6314 * abort this guy
6315 */
6316 SCTP_SNPRINTF(msg, sizeof(msg),
6317 "%s:%d at %s", __FILE__, __LINE__, __func__);
6318 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
6319 msg);
6320 sctp_abort_an_association(stcb_tmp->sctp_ep,
6321 stcb_tmp, op_err, false,
6322 SCTP_SO_NOT_LOCKED);
6323 goto add_it_now6;
6324 }
6325 SCTP_TCB_UNLOCK(stcb_tmp);
6326 }
6327 if (stcb->asoc.state == 0) {
6328 /* the assoc was freed? */
6329 return (-21);
6330 }
6331 return (-22);
6332 }
6333 }
6334 } else
6335#endif
6336 if (ptype == SCTP_ECN_CAPABLE) {
6337 peer_supports_ecn = 1;
6338 } else if (ptype == SCTP_ULP_ADAPTATION) {
6339 if (stcb->asoc.state != SCTP_STATE_OPEN) {
6340 struct sctp_adaptation_layer_indication ai,
6341 *aip;
6342
6343 phdr = sctp_get_next_param(m, offset,
6344 (struct sctp_paramhdr *)&ai, sizeof(ai));
6345 aip = (struct sctp_adaptation_layer_indication *)phdr;
6346 if (aip) {
6347 stcb->asoc.peers_adaptation = ntohl(aip->indication);
6348 stcb->asoc.adaptation_needed = 1;
6349 }
6350 }
6351 } else if (ptype == SCTP_SET_PRIM_ADDR) {
6352 struct sctp_asconf_addr_param lstore, *fee;
6353 int lptype;
6354 struct sockaddr *lsa = NULL;
6355#ifdef INET
6356 struct sctp_asconf_addrv4_param *fii;
6357#endif
6358
6359 if (stcb->asoc.asconf_supported == 0) {
6360 return (-100);
6361 }
6362 if (plen > sizeof(lstore)) {
6363 return (-23);
6364 }
6365 if (plen < sizeof(struct sctp_asconf_addrv4_param)) {
6366 return (-101);
6367 }
6368 phdr = sctp_get_next_param(m, offset,
6369 (struct sctp_paramhdr *)&lstore,
6370 plen);
6371 if (phdr == NULL) {
6372 return (-24);
6373 }
6374 fee = (struct sctp_asconf_addr_param *)phdr;
6375 lptype = ntohs(fee->addrp.ph.param_type);
6376 switch (lptype) {
6377#ifdef INET
6378 case SCTP_IPV4_ADDRESS:
6379 if (plen !=
6380 sizeof(struct sctp_asconf_addrv4_param)) {
6381 SCTP_PRINTF("Sizeof setprim in init/init ack not %d but %d - ignored\n",
6382 (int)sizeof(struct sctp_asconf_addrv4_param),
6383 plen);
6384 } else {
6385 fii = (struct sctp_asconf_addrv4_param *)fee;
6386 sin.sin_addr.s_addr = fii->addrp.addr;
6387 lsa = (struct sockaddr *)&sin;
6388 }
6389 break;
6390#endif
6391#ifdef INET6
6392 case SCTP_IPV6_ADDRESS:
6393 if (plen !=
6394 sizeof(struct sctp_asconf_addr_param)) {
6395 SCTP_PRINTF("Sizeof setprim (v6) in init/init ack not %d but %d - ignored\n",
6396 (int)sizeof(struct sctp_asconf_addr_param),
6397 plen);
6398 } else {
6399 memcpy(sin6.sin6_addr.s6_addr,
6400 fee->addrp.addr,
6401 sizeof(fee->addrp.addr));
6402 lsa = (struct sockaddr *)&sin6;
6403 }
6404 break;
6405#endif
6406 default:
6407 break;
6408 }
6409 if (lsa) {
6410 (void)sctp_set_primary_addr(stcb, sa, NULL);
6411 }
6412 } else if (ptype == SCTP_HAS_NAT_SUPPORT) {
6413 stcb->asoc.peer_supports_nat = 1;
6414 } else if (ptype == SCTP_PRSCTP_SUPPORTED) {
6415 /* Peer supports pr-sctp */
6416 peer_supports_prsctp = 1;
6417 } else if (ptype == SCTP_SUPPORTED_CHUNK_EXT) {
6418 /* A supported extension chunk */
6419 struct sctp_supported_chunk_types_param *pr_supported;
6420 uint8_t local_store[SCTP_PARAM_BUFFER_SIZE];
6421 int num_ent, i;
6422
6423 if (plen > sizeof(local_store)) {
6424 return (-35);
6425 }
6426 phdr = sctp_get_next_param(m, offset,
6427 (struct sctp_paramhdr *)&local_store, plen);
6428 if (phdr == NULL) {
6429 return (-25);
6430 }
6431 pr_supported = (struct sctp_supported_chunk_types_param *)phdr;
6432 num_ent = plen - sizeof(struct sctp_paramhdr);
6433 for (i = 0; i < num_ent; i++) {
6434 switch (pr_supported->chunk_types[i]) {
6435 case SCTP_ASCONF:
6436 peer_supports_asconf = 1;
6437 break;
6438 case SCTP_ASCONF_ACK:
6439 peer_supports_asconf_ack = 1;
6440 break;
6441 case SCTP_FORWARD_CUM_TSN:
6442 peer_supports_prsctp = 1;
6443 break;
6444 case SCTP_PACKET_DROPPED:
6445 peer_supports_pktdrop = 1;
6446 break;
6447 case SCTP_NR_SELECTIVE_ACK:
6448 peer_supports_nrsack = 1;
6449 break;
6450 case SCTP_STREAM_RESET:
6451 peer_supports_reconfig = 1;
6452 break;
6453 case SCTP_AUTHENTICATION:
6454 peer_supports_auth = 1;
6455 break;
6456 case SCTP_IDATA:
6457 peer_supports_idata = 1;
6458 break;
6459 default:
6460 /* one I have not learned yet */
6461 break;
6462 }
6463 }
6464 } else if (ptype == SCTP_RANDOM) {
6465 if (plen > sizeof(random_store))
6466 break;
6467 if (got_random) {
6468 /* already processed a RANDOM */
6469 goto next_param;
6470 }
6471 phdr = sctp_get_next_param(m, offset,
6472 (struct sctp_paramhdr *)random_store,
6473 plen);
6474 if (phdr == NULL)
6475 return (-26);
6476 p_random = (struct sctp_auth_random *)phdr;
6477 random_len = plen - sizeof(*p_random);
6478 /* enforce the random length */
6479 if (random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED) {
6480 SCTPDBG(SCTP_DEBUG_AUTH1, "SCTP: invalid RANDOM len\n");
6481 return (-27);
6482 }
6483 got_random = 1;
6484 } else if (ptype == SCTP_HMAC_LIST) {
6485 uint16_t num_hmacs;
6486 uint16_t i;
6487
6488 if (plen > sizeof(hmacs_store))
6489 break;
6490 if (got_hmacs) {
6491 /* already processed a HMAC list */
6492 goto next_param;
6493 }
6494 phdr = sctp_get_next_param(m, offset,
6495 (struct sctp_paramhdr *)hmacs_store,
6496 plen);
6497 if (phdr == NULL)
6498 return (-28);
6499 hmacs = (struct sctp_auth_hmac_algo *)phdr;
6500 hmacs_len = plen - sizeof(*hmacs);
6501 num_hmacs = hmacs_len / sizeof(hmacs->hmac_ids[0]);
6502 /* validate the hmac list */
6503 if (sctp_verify_hmac_param(hmacs, num_hmacs)) {
6504 return (-29);
6505 }
6506 if (stcb->asoc.peer_hmacs != NULL)
6507 sctp_free_hmaclist(stcb->asoc.peer_hmacs);
6508 stcb->asoc.peer_hmacs = sctp_alloc_hmaclist(num_hmacs);
6509 if (stcb->asoc.peer_hmacs != NULL) {
6510 for (i = 0; i < num_hmacs; i++) {
6511 (void)sctp_auth_add_hmacid(stcb->asoc.peer_hmacs,
6512 ntohs(hmacs->hmac_ids[i]));
6513 }
6514 }
6515 got_hmacs = 1;
6516 } else if (ptype == SCTP_CHUNK_LIST) {
6517 int i;
6518
6519 if (plen > sizeof(chunks_store))
6520 break;
6521 if (got_chklist) {
6522 /* already processed a Chunks list */
6523 goto next_param;
6524 }
6525 phdr = sctp_get_next_param(m, offset,
6526 (struct sctp_paramhdr *)chunks_store,
6527 plen);
6528 if (phdr == NULL)
6529 return (-30);
6530 chunks = (struct sctp_auth_chunk_list *)phdr;
6531 num_chunks = plen - sizeof(*chunks);
6532 if (stcb->asoc.peer_auth_chunks != NULL)
6533 sctp_clear_chunklist(stcb->asoc.peer_auth_chunks);
6534 else
6535 stcb->asoc.peer_auth_chunks = sctp_alloc_chunklist();
6536 for (i = 0; i < num_chunks; i++) {
6537 (void)sctp_auth_add_chunk(chunks->chunk_types[i],
6538 stcb->asoc.peer_auth_chunks);
6539 /* record asconf/asconf-ack if listed */
6540 if (chunks->chunk_types[i] == SCTP_ASCONF)
6541 saw_asconf = 1;
6542 if (chunks->chunk_types[i] == SCTP_ASCONF_ACK)
6543 saw_asconf_ack = 1;
6544 }
6545 got_chklist = 1;
6546 } else if ((ptype == SCTP_HEARTBEAT_INFO) ||
6547 (ptype == SCTP_STATE_COOKIE) ||
6548 (ptype == SCTP_UNRECOG_PARAM) ||
6549 (ptype == SCTP_COOKIE_PRESERVE) ||
6550 (ptype == SCTP_SUPPORTED_ADDRTYPE) ||
6551 (ptype == SCTP_ADD_IP_ADDRESS) ||
6552 (ptype == SCTP_DEL_IP_ADDRESS) ||
6553 (ptype == SCTP_ERROR_CAUSE_IND) ||
6554 (ptype == SCTP_SUCCESS_REPORT)) {
6555 /* don't care */
6556 } else {
6557 if ((ptype & 0x8000) == 0x0000) {
6558 /*
6559 * must stop processing the rest of the
6560 * param's. Any report bits were handled
6561 * with the call to
6562 * sctp_arethere_unrecognized_parameters()
6563 * when the INIT or INIT-ACK was first seen.
6564 */
6565 break;
6566 }
6567 }
6568
6569next_param:
6570 offset += SCTP_SIZE32(plen);
6571 if (offset >= limit) {
6572 break;
6573 }
6574 phdr = sctp_get_next_param(m, offset, &param_buf,
6575 sizeof(param_buf));
6576 }
6577 /* Now check to see if we need to purge any addresses */
6578 TAILQ_FOREACH_SAFE(net, &stcb->asoc.nets, sctp_next, nnet) {
6579 if ((net->dest_state & SCTP_ADDR_NOT_IN_ASSOC) ==
6580 SCTP_ADDR_NOT_IN_ASSOC) {
6581 /* This address has been removed from the asoc */
6582 /* remove and free it */
6583 stcb->asoc.numnets--;
6584 TAILQ_REMOVE(&stcb->asoc.nets, net, sctp_next);
6585 if (net == stcb->asoc.alternate) {
6586 sctp_free_remote_addr(stcb->asoc.alternate);
6587 stcb->asoc.alternate = NULL;
6588 }
6589 if (net == stcb->asoc.primary_destination) {
6590 stcb->asoc.primary_destination = NULL;
6591 sctp_select_primary_destination(stcb);
6592 }
6593 sctp_free_remote_addr(net);
6594 }
6595 }
6596 if ((stcb->asoc.ecn_supported == 1) &&
6597 (peer_supports_ecn == 0)) {
6598 stcb->asoc.ecn_supported = 0;
6599 }
6600 if ((stcb->asoc.prsctp_supported == 1) &&
6601 (peer_supports_prsctp == 0)) {
6602 stcb->asoc.prsctp_supported = 0;
6603 }
6604 if ((stcb->asoc.auth_supported == 1) &&
6605 ((peer_supports_auth == 0) ||
6606 (got_random == 0) || (got_hmacs == 0))) {
6607 stcb->asoc.auth_supported = 0;
6608 }
6609 if ((stcb->asoc.asconf_supported == 1) &&
6610 ((peer_supports_asconf == 0) || (peer_supports_asconf_ack == 0) ||
6611 (stcb->asoc.auth_supported == 0) ||
6612 (saw_asconf == 0) || (saw_asconf_ack == 0))) {
6613 stcb->asoc.asconf_supported = 0;
6614 }
6615 if ((stcb->asoc.reconfig_supported == 1) &&
6616 (peer_supports_reconfig == 0)) {
6617 stcb->asoc.reconfig_supported = 0;
6618 }
6619 if ((stcb->asoc.idata_supported == 1) &&
6620 (peer_supports_idata == 0)) {
6621 stcb->asoc.idata_supported = 0;
6622 }
6623 if ((stcb->asoc.nrsack_supported == 1) &&
6624 (peer_supports_nrsack == 0)) {
6625 stcb->asoc.nrsack_supported = 0;
6626 }
6627 if ((stcb->asoc.pktdrop_supported == 1) &&
6628 (peer_supports_pktdrop == 0)) {
6629 stcb->asoc.pktdrop_supported = 0;
6630 }
6631 /* validate authentication required parameters */
6632 if ((peer_supports_auth == 0) && (got_chklist == 1)) {
6633 /* peer does not support auth but sent a chunks list? */
6634 return (-31);
6635 }
6636 if ((peer_supports_asconf == 1) && (peer_supports_auth == 0)) {
6637 /* peer supports asconf but not auth? */
6638 return (-32);
6639 } else if ((peer_supports_asconf == 1) &&
6640 (peer_supports_auth == 1) &&
6641 ((saw_asconf == 0) || (saw_asconf_ack == 0))) {
6642 return (-33);
6643 }
6644 /* concatenate the full random key */
6645 keylen = sizeof(*p_random) + random_len + sizeof(*hmacs) + hmacs_len;
6646 if (chunks != NULL) {
6647 keylen += sizeof(*chunks) + num_chunks;
6648 }
6649 new_key = sctp_alloc_key(keylen);
6650 if (new_key != NULL) {
6651 /* copy in the RANDOM */
6652 if (p_random != NULL) {
6653 keylen = sizeof(*p_random) + random_len;
6654 memcpy(new_key->key, p_random, keylen);
6655 } else {
6656 keylen = 0;
6657 }
6658 /* append in the AUTH chunks */
6659 if (chunks != NULL) {
6660 memcpy(new_key->key + keylen, chunks,
6661 sizeof(*chunks) + num_chunks);
6662 keylen += sizeof(*chunks) + num_chunks;
6663 }
6664 /* append in the HMACs */
6665 if (hmacs != NULL) {
6666 memcpy(new_key->key + keylen, hmacs,
6667 sizeof(*hmacs) + hmacs_len);
6668 }
6669 } else {
6670 /* failed to get memory for the key */
6671 return (-34);
6672 }
6673 if (stcb->asoc.authinfo.peer_random != NULL)
6674 sctp_free_key(stcb->asoc.authinfo.peer_random);
6675 stcb->asoc.authinfo.peer_random = new_key;
6676 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.assoc_keyid);
6677 sctp_clear_cachedkeys(stcb, stcb->asoc.authinfo.recv_keyid);
6678
6679 return (0);
6680}
6681
6682int
6683sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa,
6684 struct sctp_nets *net)
6685{
6686 /* make sure the requested primary address exists in the assoc */
6687 if (net == NULL && sa)
6688 net = sctp_findnet(stcb, sa);
6689
6690 if (net == NULL) {
6691 /* didn't find the requested primary address! */
6692 return (-1);
6693 } else {
6694 /* set the primary address */
6695 if (net->dest_state & SCTP_ADDR_UNCONFIRMED) {
6696 /* Must be confirmed, so queue to set */
6697 net->dest_state |= SCTP_ADDR_REQ_PRIMARY;
6698 return (0);
6699 }
6700 stcb->asoc.primary_destination = net;
6701 if (!(net->dest_state & SCTP_ADDR_PF) && (stcb->asoc.alternate)) {
6702 sctp_free_remote_addr(stcb->asoc.alternate);
6703 stcb->asoc.alternate = NULL;
6704 }
6705 net = TAILQ_FIRST(&stcb->asoc.nets);
6706 if (net != stcb->asoc.primary_destination) {
6707 /*
6708 * first one on the list is NOT the primary
6709 * sctp_cmpaddr() is much more efficient if the
6710 * primary is the first on the list, make it so.
6711 */
6712 TAILQ_REMOVE(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6713 TAILQ_INSERT_HEAD(&stcb->asoc.nets, stcb->asoc.primary_destination, sctp_next);
6714 }
6715 return (0);
6716 }
6717}
6718
6719bool
6720sctp_is_vtag_good(uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now)
6721{
6722 struct sctpasochead *head;
6723 struct sctp_tcb *stcb;
6724
6725 SCTP_INP_INFO_LOCK_ASSERT();
6726
6727 head = &SCTP_BASE_INFO(sctp_asochash)[SCTP_PCBHASH_ASOC(tag, SCTP_BASE_INFO(hashasocmark))];
6728 LIST_FOREACH(stcb, head, sctp_asocs) {
6729 /*
6730 * We choose not to lock anything here. TCB's can't be
6731 * removed since we have the read lock, so they can't be
6732 * freed on us, same thing for the INP. I may be wrong with
6733 * this assumption, but we will go with it for now :-)
6734 */
6735 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) {
6736 continue;
6737 }
6738 if (stcb->asoc.my_vtag == tag) {
6739 /* candidate */
6740 if (stcb->rport != rport) {
6741 continue;
6742 }
6743 if (stcb->sctp_ep->sctp_lport != lport) {
6744 continue;
6745 }
6746 /* The tag is currently used, so don't use it. */
6747 return (false);
6748 }
6749 }
6750 return (!sctp_is_in_timewait(tag, lport, rport, (uint32_t)now->tv_sec));
6751}
6752
6753static void
6754sctp_drain_mbufs(struct sctp_tcb *stcb)
6755{
6756 /*
6757 * We must hunt this association for MBUF's past the cumack (i.e.
6758 * out of order data that we can renege on).
6759 */
6760 struct sctp_association *asoc;
6761 struct sctp_tmit_chunk *chk, *nchk;
6762 uint32_t cumulative_tsn_p1;
6763 struct sctp_queued_to_read *control, *ncontrol;
6764 int cnt, strmat;
6765 uint32_t gap, i;
6766 int fnd = 0;
6767
6768 /* We look for anything larger than the cum-ack + 1 */
6769
6770 asoc = &stcb->asoc;
6771 if (asoc->cumulative_tsn == asoc->highest_tsn_inside_map) {
6772 /* none we can reneg on. */
6773 return;
6774 }
6775 SCTP_STAT_INCR(sctps_protocol_drains_done);
6776 cumulative_tsn_p1 = asoc->cumulative_tsn + 1;
6777 cnt = 0;
6778 /* Ok that was fun, now we will drain all the inbound streams? */
6779 for (strmat = 0; strmat < asoc->streamincnt; strmat++) {
6780 TAILQ_FOREACH_SAFE(control, &asoc->strmin[strmat].inqueue, next_instrm, ncontrol) {
6781#ifdef INVARIANTS
6782 if (control->on_strm_q != SCTP_ON_ORDERED) {
6783 panic("Huh control: %p on_q: %d -- not ordered?",
6784 control, control->on_strm_q);
6785 }
6786#endif
6787 if (SCTP_TSN_GT(control->sinfo_tsn, cumulative_tsn_p1)) {
6788 /* Yep it is above cum-ack */
6789 cnt++;
6790 SCTP_CALC_TSN_TO_GAP(gap, control->sinfo_tsn, asoc->mapping_array_base_tsn);
6791 KASSERT(control->length > 0, ("control has zero length"));
6792 if (asoc->size_on_all_streams >= control->length) {
6793 asoc->size_on_all_streams -= control->length;
6794 } else {
6795#ifdef INVARIANTS
6796 panic("size_on_all_streams = %u smaller than control length %u", asoc->size_on_all_streams, control->length);
6797#else
6798 asoc->size_on_all_streams = 0;
6799#endif
6800 }
6801 sctp_ucount_decr(asoc->cnt_on_all_streams);
6802 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6803 if (control->on_read_q) {
6804 TAILQ_REMOVE(&stcb->sctp_ep->read_queue, control, next);
6805 control->on_read_q = 0;
6806 }
6807 TAILQ_REMOVE(&asoc->strmin[strmat].inqueue, control, next_instrm);
6808 control->on_strm_q = 0;
6809 if (control->data) {
6810 sctp_m_freem(control->data);
6811 control->data = NULL;
6812 }
6813 sctp_free_remote_addr(control->whoFrom);
6814 /* Now its reasm? */
6815 TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) {
6816 cnt++;
6817 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.tsn, asoc->mapping_array_base_tsn);
6818 KASSERT(chk->send_size > 0, ("chunk has zero length"));
6819 if (asoc->size_on_reasm_queue >= chk->send_size) {
6820 asoc->size_on_reasm_queue -= chk->send_size;
6821 } else {
6822#ifdef INVARIANTS
6823 panic("size_on_reasm_queue = %u smaller than chunk length %u", asoc->size_on_reasm_queue, chk->send_size);
6824#else
6825 asoc->size_on_reasm_queue = 0;
6826#endif
6827 }
6828 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6829 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6830 TAILQ_REMOVE(&control->reasm, chk, sctp_next);
6831 if (chk->data) {
6832 sctp_m_freem(chk->data);
6833 chk->data = NULL;
6834 }
6835 sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
6836 }
6837 sctp_free_a_readq(stcb, control);
6838 }
6839 }
6840 TAILQ_FOREACH_SAFE(control, &asoc->strmin[strmat].uno_inqueue, next_instrm, ncontrol) {
6841#ifdef INVARIANTS
6842 if (control->on_strm_q != SCTP_ON_UNORDERED) {
6843 panic("Huh control: %p on_q: %d -- not unordered?",
6844 control, control->on_strm_q);
6845 }
6846#endif
6847 if (SCTP_TSN_GT(control->sinfo_tsn, cumulative_tsn_p1)) {
6848 /* Yep it is above cum-ack */
6849 cnt++;
6850 SCTP_CALC_TSN_TO_GAP(gap, control->sinfo_tsn, asoc->mapping_array_base_tsn);
6851 KASSERT(control->length > 0, ("control has zero length"));
6852 if (asoc->size_on_all_streams >= control->length) {
6853 asoc->size_on_all_streams -= control->length;
6854 } else {
6855#ifdef INVARIANTS
6856 panic("size_on_all_streams = %u smaller than control length %u", asoc->size_on_all_streams, control->length);
6857#else
6858 asoc->size_on_all_streams = 0;
6859#endif
6860 }
6861 sctp_ucount_decr(asoc->cnt_on_all_streams);
6862 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6863 if (control->on_read_q) {
6864 TAILQ_REMOVE(&stcb->sctp_ep->read_queue, control, next);
6865 control->on_read_q = 0;
6866 }
6867 TAILQ_REMOVE(&asoc->strmin[strmat].uno_inqueue, control, next_instrm);
6868 control->on_strm_q = 0;
6869 if (control->data) {
6870 sctp_m_freem(control->data);
6871 control->data = NULL;
6872 }
6873 sctp_free_remote_addr(control->whoFrom);
6874 /* Now its reasm? */
6875 TAILQ_FOREACH_SAFE(chk, &control->reasm, sctp_next, nchk) {
6876 cnt++;
6877 SCTP_CALC_TSN_TO_GAP(gap, chk->rec.data.tsn, asoc->mapping_array_base_tsn);
6878 KASSERT(chk->send_size > 0, ("chunk has zero length"));
6879 if (asoc->size_on_reasm_queue >= chk->send_size) {
6880 asoc->size_on_reasm_queue -= chk->send_size;
6881 } else {
6882#ifdef INVARIANTS
6883 panic("size_on_reasm_queue = %u smaller than chunk length %u", asoc->size_on_reasm_queue, chk->send_size);
6884#else
6885 asoc->size_on_reasm_queue = 0;
6886#endif
6887 }
6888 sctp_ucount_decr(asoc->cnt_on_reasm_queue);
6889 SCTP_UNSET_TSN_PRESENT(asoc->mapping_array, gap);
6890 TAILQ_REMOVE(&control->reasm, chk, sctp_next);
6891 if (chk->data) {
6892 sctp_m_freem(chk->data);
6893 chk->data = NULL;
6894 }
6895 sctp_free_a_chunk(stcb, chk, SCTP_SO_NOT_LOCKED);
6896 }
6897 sctp_free_a_readq(stcb, control);
6898 }
6899 }
6900 }
6901 if (cnt) {
6902 /* We must back down to see what the new highest is */
6903 for (i = asoc->highest_tsn_inside_map; SCTP_TSN_GE(i, asoc->mapping_array_base_tsn); i--) {
6904 SCTP_CALC_TSN_TO_GAP(gap, i, asoc->mapping_array_base_tsn);
6905 if (SCTP_IS_TSN_PRESENT(asoc->mapping_array, gap)) {
6906 asoc->highest_tsn_inside_map = i;
6907 fnd = 1;
6908 break;
6909 }
6910 }
6911 if (!fnd) {
6912 asoc->highest_tsn_inside_map = asoc->mapping_array_base_tsn - 1;
6913 }
6914
6915 /*
6916 * Question, should we go through the delivery queue? The
6917 * only reason things are on here is the app not reading OR
6918 * a p-d-api up. An attacker COULD send enough in to
6919 * initiate the PD-API and then send a bunch of stuff to
6920 * other streams... these would wind up on the delivery
6921 * queue.. and then we would not get to them. But in order
6922 * to do this I then have to back-track and un-deliver
6923 * sequence numbers in streams.. el-yucko. I think for now
6924 * we will NOT look at the delivery queue and leave it to be
6925 * something to consider later. An alternative would be to
6926 * abort the P-D-API with a notification and then deliver
6927 * the data.... Or another method might be to keep track of
6928 * how many times the situation occurs and if we see a
6929 * possible attack underway just abort the association.
6930 */
6931#ifdef SCTP_DEBUG
6932 SCTPDBG(SCTP_DEBUG_PCB1, "Freed %d chunks from reneg harvest\n", cnt);
6933#endif
6934 /*
6935 * Now do we need to find a new
6936 * asoc->highest_tsn_inside_map?
6937 */
6938 asoc->last_revoke_count = cnt;
6939 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL,
6940 SCTP_FROM_SCTP_PCB + SCTP_LOC_11);
6941 /* sa_ignore NO_NULL_CHK */
6942 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
6943 sctp_chunk_output(stcb->sctp_ep, stcb, SCTP_OUTPUT_FROM_DRAIN, SCTP_SO_NOT_LOCKED);
6944 }
6945 /*
6946 * Another issue, in un-setting the TSN's in the mapping array we
6947 * DID NOT adjust the highest_tsn marker. This will cause one of
6948 * two things to occur. It may cause us to do extra work in checking
6949 * for our mapping array movement. More importantly it may cause us
6950 * to SACK every datagram. This may not be a bad thing though since
6951 * we will recover once we get our cum-ack above and all this stuff
6952 * we dumped recovered.
6953 */
6954}
6955
6956void
6957sctp_drain()
6958{
6959 /*
6960 * We must walk the PCB lists for ALL associations here. The system
6961 * is LOW on MBUF's and needs help. This is where reneging will
6962 * occur. We really hope this does NOT happen!
6963 */
6964 VNET_ITERATOR_DECL(vnet_iter);
6965 VNET_LIST_RLOCK_NOSLEEP();
6966 VNET_FOREACH(vnet_iter) {
6967 CURVNET_SET(vnet_iter);
6968 struct sctp_inpcb *inp;
6969 struct sctp_tcb *stcb;
6970
6971 SCTP_STAT_INCR(sctps_protocol_drain_calls);
6972 if (SCTP_BASE_SYSCTL(sctp_do_drain) == 0) {
6973#ifdef VIMAGE
6974 continue;
6975#else
6976 return;
6977#endif
6978 }
6979 SCTP_INP_INFO_RLOCK();
6980 LIST_FOREACH(inp, &SCTP_BASE_INFO(listhead), sctp_list) {
6981 /* For each endpoint */
6982 SCTP_INP_RLOCK(inp);
6983 LIST_FOREACH(stcb, &inp->sctp_asoc_list, sctp_tcblist) {
6984 /* For each association */
6985 SCTP_TCB_LOCK(stcb);
6986 sctp_drain_mbufs(stcb);
6987 SCTP_TCB_UNLOCK(stcb);
6988 }
6989 SCTP_INP_RUNLOCK(inp);
6990 }
6991 SCTP_INP_INFO_RUNLOCK();
6992 CURVNET_RESTORE();
6993 }
6994 VNET_LIST_RUNLOCK_NOSLEEP();
6995}
6996
6997/*
6998 * start a new iterator
6999 * iterates through all endpoints and associations based on the pcb_state
7000 * flags and asoc_state. "af" (mandatory) is executed for all matching
7001 * assocs and "ef" (optional) is executed when the iterator completes.
7002 * "inpf" (optional) is executed for each new endpoint as it is being
7003 * iterated through. inpe (optional) is called when the inp completes
7004 * its way through all the stcbs.
7005 */
7006int
7007sctp_initiate_iterator(inp_func inpf,
7008 asoc_func af,
7009 inp_func inpe,
7010 uint32_t pcb_state,
7011 uint32_t pcb_features,
7012 uint32_t asoc_state,
7013 void *argp,
7014 uint32_t argi,
7015 end_func ef,
7016 struct sctp_inpcb *s_inp,
7017 uint8_t chunk_output_off)
7018{
7019 struct sctp_iterator *it = NULL;
7020
7021 if (af == NULL) {
7022 return (-1);
7023 }
7024 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
7025 SCTP_PRINTF("%s: abort on initialize being %d\n", __func__,
7026 SCTP_BASE_VAR(sctp_pcb_initialized));
7027 return (-1);
7028 }
7029 SCTP_MALLOC(it, struct sctp_iterator *, sizeof(struct sctp_iterator),
7030 SCTP_M_ITER);
7031 if (it == NULL) {
7032 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP_PCB, ENOMEM);
7033 return (-1);
7034 }
7035 memset(it, 0, sizeof(*it));
7036 it->function_assoc = af;
7037 it->function_inp = inpf;
7038 if (inpf)
7039 it->done_current_ep = 0;
7040 else
7041 it->done_current_ep = 1;
7042 it->function_atend = ef;
7043 it->pointer = argp;
7044 it->val = argi;
7045 it->pcb_flags = pcb_state;
7046 it->pcb_features = pcb_features;
7047 it->asoc_state = asoc_state;
7048 it->function_inp_end = inpe;
7049 it->no_chunk_output = chunk_output_off;
7050 it->vn = curvnet;
7051 if (s_inp) {
7052 /* Assume lock is held here */
7053 it->inp = s_inp;
7054 SCTP_INP_INCR_REF(it->inp);
7055 it->iterator_flags = SCTP_ITERATOR_DO_SINGLE_INP;
7056 } else {
7057 SCTP_INP_INFO_RLOCK();
7058 it->inp = LIST_FIRST(&SCTP_BASE_INFO(listhead));
7059 if (it->inp) {
7060 SCTP_INP_INCR_REF(it->inp);
7061 }
7062 SCTP_INP_INFO_RUNLOCK();
7063 it->iterator_flags = SCTP_ITERATOR_DO_ALL_INP;
7064 }
7065 SCTP_IPI_ITERATOR_WQ_LOCK();
7066 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
7067 SCTP_IPI_ITERATOR_WQ_UNLOCK();
7068 SCTP_PRINTF("%s: rollback on initialize being %d it=%p\n", __func__,
7069 SCTP_BASE_VAR(sctp_pcb_initialized), it);
7070 SCTP_FREE(it, SCTP_M_ITER);
7071 return (-1);
7072 }
7073 TAILQ_INSERT_TAIL(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
7074 if (sctp_it_ctl.iterator_running == 0) {
7075 sctp_wakeup_iterator();
7076 }
7077 SCTP_IPI_ITERATOR_WQ_UNLOCK();
7078 /* sa_ignore MEMLEAK {memory is put on the tailq for the iterator} */
7079 return (0);
7080}
uint32_t
__uint32_t uint32_t
Definition: in.h:62
uint16_t
__uint16_t uint16_t
Definition: in.h:57
uint8_t
__uint8_t uint8_t
Definition: in.h:52
INADDR_BROADCAST
#define INADDR_BROADCAST
Definition: in.h:49
INADDR_ANY
#define INADDR_ANY
Definition: in.h:48
prison_local_ip4
int prison_local_ip4(struct ucred *cred, struct in_addr *ia)
Definition: in_jail.c:220
prison_check_ip4
int prison_check_ip4(const struct ucred *cred, const struct in_addr *ia)
Definition: in_jail.c:322
INP_SOCKAF
#define INP_SOCKAF(so)
Definition: in_pcb.h:703
IN6P_IPV6_V6ONLY
#define IN6P_IPV6_V6ONLY
Definition: in_pcb.h:635
INP_IPV4
#define INP_IPV4
Definition: in_pcb.h:613
INP_CONTROLOPTS
#define INP_CONTROLOPTS
Definition: in_pcb.h:653
INP_HIGHPORT
#define INP_HIGHPORT
Definition: in_pcb.h:624
IN6P_AUTOFLOWLABEL
#define IN6P_AUTOFLOWLABEL
Definition: in_pcb.h:643
INP_LOWPORT
#define INP_LOWPORT
Definition: in_pcb.h:625
INP_LOCK_DESTROY
#define INP_LOCK_DESTROY(inp)
Definition: in_pcb.h:516
INP_IPV6
#define INP_IPV6
Definition: in_pcb.h:614
id
struct ipfw_flow_id id
Definition: ip_fw.h:7
next
ipfw_dyn_rule * next
Definition: ip_fw.h:0
bucket
u_int32_t bucket
Definition: ip_fw.h:9
count
u_int16_t count
Definition: ip_fw.h:18
SCTP_PCB_FLAGS_INTERLEAVE_STRMS
#define SCTP_PCB_FLAGS_INTERLEAVE_STRMS
Definition: sctp.h:537
SCTP_PCB_FLAGS_DONT_WAKE
#define SCTP_PCB_FLAGS_DONT_WAKE
Definition: sctp.h:516
SCTP_ASCONF_ACK
#define SCTP_ASCONF_ACK
Definition: sctp.h:454
SCTP_INITIATION_ACK
#define SCTP_INITIATION_ACK
Definition: sctp.h:433
SCTP_ASCONF
#define SCTP_ASCONF
Definition: sctp.h:466
SCTP_PCB_FLAGS_BOUND_V6
#define SCTP_PCB_FLAGS_BOUND_V6
Definition: sctp.h:519
SCTP_PCB_FLAGS_TCPTYPE
#define SCTP_PCB_FLAGS_TCPTYPE
Definition: sctp.h:504
SCTP_PCB_FLAGS_SOCKET_ALLGONE
#define SCTP_PCB_FLAGS_SOCKET_ALLGONE
Definition: sctp.h:522
SCTP_FORWARD_CUM_TSN
#define SCTP_FORWARD_CUM_TSN
Definition: sctp.h:464
SCTP_PCB_FLAGS_UDPTYPE
#define SCTP_PCB_FLAGS_UDPTYPE
Definition: sctp.h:503
SCTP_PCB_FLAGS_PDAPIEVNT
#define SCTP_PCB_FLAGS_PDAPIEVNT
Definition: sctp.h:550
SCTP_PCB_FLAGS_UNBOUND
#define SCTP_PCB_FLAGS_UNBOUND
Definition: sctp.h:507
SCTP_PCB_FLAGS_WAS_CONNECTED
#define SCTP_PCB_FLAGS_WAS_CONNECTED
Definition: sctp.h:510
SCTP_PCB_FLAGS_DONOT_HEARTBEAT
#define SCTP_PCB_FLAGS_DONOT_HEARTBEAT
Definition: sctp.h:535
SCTP_PACKET_DROPPED
#define SCTP_PACKET_DROPPED
Definition: sctp.h:456
SCTP_MOBILITY_BASE
#define SCTP_MOBILITY_BASE
Definition: sctp.h:571
SCTP_PCB_FLAGS_IN_TCPPOOL
#define SCTP_PCB_FLAGS_IN_TCPPOOL
Definition: sctp.h:515
SCTP_PCB_FLAGS_SOCKET_GONE
#define SCTP_PCB_FLAGS_SOCKET_GONE
Definition: sctp.h:521
SCTP_PCB_FLAGS_DO_ASCONF
#define SCTP_PCB_FLAGS_DO_ASCONF
Definition: sctp.h:538
SCTP_STREAM_RESET
#define SCTP_STREAM_RESET
Definition: sctp.h:458
SCTP_PCB_FLAGS_WAS_ABORTED
#define SCTP_PCB_FLAGS_WAS_ABORTED
Definition: sctp.h:511
SCTP_PCB_FLAGS_CONNECTED
#define SCTP_PCB_FLAGS_CONNECTED
Definition: sctp.h:514
SCTP_AUTHENTICATION
#define SCTP_AUTHENTICATION
Definition: sctp.h:447
SCTP_PCB_FLAGS_AUTO_ASCONF
#define SCTP_PCB_FLAGS_AUTO_ASCONF
Definition: sctp.h:539
SCTP_IDATA
#define SCTP_IDATA
Definition: sctp.h:451
SCTP_PCB_FLAGS_PORTREUSE
#define SCTP_PCB_FLAGS_PORTREUSE
Definition: sctp.h:557
SCTP_FRAG_LEVEL_1
#define SCTP_FRAG_LEVEL_1
Definition: sctp.h:322
SCTP_CAUSE_USER_INITIATED_ABT
#define SCTP_CAUSE_USER_INITIATED_ABT
Definition: sctp.h:354
SCTP_MOBILITY_FASTHANDOFF
#define SCTP_MOBILITY_FASTHANDOFF
Definition: sctp.h:572
SCTP_FRAG_LEVEL_2
#define SCTP_FRAG_LEVEL_2
Definition: sctp.h:323
SCTP_NR_SELECTIVE_ACK
#define SCTP_NR_SELECTIVE_ACK
Definition: sctp.h:449
SCTP_PCB_FLAGS_CLOSE_IP
#define SCTP_PCB_FLAGS_CLOSE_IP
Definition: sctp.h:509
SCTP_PCB_FLAGS_MULTIPLE_ASCONFS
#define SCTP_PCB_FLAGS_MULTIPLE_ASCONFS
Definition: sctp.h:556
SCTP_PCB_FLAGS_BOUNDALL
#define SCTP_PCB_FLAGS_BOUNDALL
Definition: sctp.h:505
SCTP_FRAG_LEVEL_0
#define SCTP_FRAG_LEVEL_0
Definition: sctp.h:321
SCTP_MOBILITY_PRIM_DELETED
#define SCTP_MOBILITY_PRIM_DELETED
Definition: sctp.h:573
SCTP_PCB_FLAGS_DO_NOT_PMTUD
#define SCTP_PCB_FLAGS_DO_NOT_PMTUD
Definition: sctp.h:533
SCTP_INITIATION
#define SCTP_INITIATION
Definition: sctp.h:432
SCTP_PCB_FLAGS_FRAG_INTERLEAVE
#define SCTP_PCB_FLAGS_FRAG_INTERLEAVE
Definition: sctp.h:536
sctp_is_addr_pending
int sctp_is_addr_pending(struct sctp_tcb *stcb, struct sctp_ifa *sctp_ifa)
Definition: sctp_asconf.c:2328
sctp_asconf.h
sctp_auth_add_hmacid
int sctp_auth_add_hmacid(sctp_hmaclist_t *list, uint16_t hmac_id)
Definition: sctp_auth.c:656
sctp_free_key
void sctp_free_key(sctp_key_t *key)
Definition: sctp_auth.c:259
sctp_clear_chunklist
void sctp_clear_chunklist(sctp_auth_chklist_t *chklist)
Definition: sctp_auth.c:55
sctp_free_chunklist
void sctp_free_chunklist(sctp_auth_chklist_t *list)
Definition: sctp_auth.c:77
sctp_free_hmaclist
void sctp_free_hmaclist(sctp_hmaclist_t *list)
Definition: sctp_auth.c:648
sctp_alloc_sharedkey
sctp_sharedkey_t * sctp_alloc_sharedkey(void)
Definition: sctp_auth.c:457
sctp_auth_add_chunk
int sctp_auth_add_chunk(uint8_t chunk, sctp_auth_chklist_t *list)
Definition: sctp_auth.c:105
sctp_verify_hmac_param
int sctp_verify_hmac_param(struct sctp_auth_hmac_algo *hmacs, uint32_t num_hmacs)
Definition: sctp_auth.c:766
sctp_free_sharedkey
void sctp_free_sharedkey(sctp_sharedkey_t *skey)
Definition: sctp_auth.c:475
sctp_initialize_auth_params
void sctp_initialize_auth_params(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
Definition: sctp_auth.c:1915
sctp_free_authinfo
void sctp_free_authinfo(sctp_authinfo_t *authinfo)
Definition: sctp_auth.c:795
sctp_alloc_chunklist
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Definition: sctp_auth.c:62
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Definition: sctp_auth.c:500
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Definition: sctp_auth.c:244
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Definition: sctp_auth.c:704
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Definition: sctp_auth.c:1145
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Definition: sctp_bsd_addr.c:270
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Definition: sctp_constants.h:428
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Definition: sctp_constants.h:512
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Definition: sctp_constants.h:410
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Definition: sctp_constants.h:511
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Definition: sctp_constants.h:948
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Definition: sctp_constants.h:462
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Definition: sctp_constants.h:666
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Definition: sctp_constants.h:457
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Definition: sctp_constants.h:837
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Definition: sctp_constants.h:795
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Definition: sctp_constants.h:479
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Definition: sctp_constants.h:542
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Definition: sctp_constants.h:481
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Definition: sctp_constants.h:659
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Definition: sctp_constants.h:735
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Definition: sctp_constants.h:802
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Definition: sctp_constants.h:528
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Definition: sctp_constants.h:469
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Definition: sctp_constants.h:801
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Definition: sctp_constants.h:363
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Definition: sctp_constants.h:692
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Definition: sctp_constants.h:753
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Definition: sctp_constants.h:796
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Definition: sctp_constants.h:862
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Definition: sctp_constants.h:752
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Definition: sctp_constants.h:581
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Definition: sctp_constants.h:751
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Definition: sctp_constants.h:456
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Definition: sctp_constants.h:536
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Definition: sctp_constants.h:670
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Definition: sctp_constants.h:465
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Definition: sctp_constants.h:792
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Definition: sctp_constants.h:758
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Definition: sctp_constants.h:959
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Definition: sctp_constants.h:749
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Definition: sctp_constants.h:750
SCTP_MCORE_NAME
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Definition: sctp_constants.h:92
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Definition: sctp_constants.h:513
SCTP_STATE_CLOSED_SOCKET
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Definition: sctp_constants.h:458
SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION
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Definition: sctp_constants.h:702
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Definition: sctp_constants.h:799
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Definition: sctp_constants.h:533
SCTP_COOKIE_PRESERVE
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Definition: sctp_constants.h:392
SCTP_NOTIFY_SPECIAL_SP_FAIL
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Definition: sctp_constants.h:694
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Definition: sctp_constants.h:388
SCTP_STATE_COOKIE_WAIT
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Definition: sctp_constants.h:451
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Definition: sctp_constants.h:477
SCTP_LOC_7
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Definition: sctp_constants.h:754
SCTP_PARTIAL_DELIVERY_SHIFT
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Definition: sctp_constants.h:291
SCTP_TIMER_TYPE_SHUTDOWN
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Definition: sctp_constants.h:529
SCTP_DEBUG_ASCONF1
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Definition: sctp_constants.h:639
SCTP_ADDR_OUT_OF_SCOPE
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Definition: sctp_constants.h:480
SCTP_MAX_NUM_OF_ASOC
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Definition: sctp_constants.h:264
SCTP_LOAD_ADDR_4
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Definition: sctp_constants.h:798
SCTP_STATE_SHUTDOWN_SENT
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Definition: sctp_constants.h:454
SCTP_STATE_SHUTDOWN_RECEIVED
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Definition: sctp_constants.h:455
SCTP_SET_PRIM_ADDR
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Definition: sctp_constants.h:427
SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE
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Definition: sctp_constants.h:842
SCTP_LOC_9
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Definition: sctp_constants.h:756
SCTP_STATE_ABOUT_TO_BE_FREED
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Definition: sctp_constants.h:459
SCTP_IPV6_ADDRESS
#define SCTP_IPV6_ADDRESS
Definition: sctp_constants.h:389
SCTP_ADDR_REACHABLE
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Definition: sctp_constants.h:475
sctp_sowwakeup
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Definition: sctp_constants.h:964
SCTP_UNSET_TSN_PRESENT
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Definition: sctp_constants.h:870
SCTP_STATE_OPEN
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Definition: sctp_constants.h:453
SCTP_SET_STATE
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Definition: sctp_constants.h:467
SCTP_TIMER_TYPE_INPKILL
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Definition: sctp_constants.h:539
SCTP_SO_LOCKED
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Definition: sctp_constants.h:931
SCTP_LOAD_ADDR_3
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Definition: sctp_constants.h:797
SCTP_ERROR_CAUSE_IND
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Definition: sctp_constants.h:426
SCTP_ADDR_BEING_DELETED
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Definition: sctp_constants.h:478
SCTP_NUMBER_IN_VTAG_BLOCK
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Definition: sctp_constants.h:889
SCTP_TIMER_HEARTBEAT
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Definition: sctp_constants.h:514
SCTP_SUPPORTED_ADDRTYPE
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Definition: sctp_constants.h:394
SCTP_OUTPUT_FROM_CLOSING
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Definition: sctp_constants.h:374
SCTP_DEBUG_AUTH1
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Definition: sctp_constants.h:633
SCTP_HEARTBEAT_INFO
#define SCTP_HEARTBEAT_INFO
Definition: sctp_constants.h:387
SCTP_DEBUG_PCB3
#define SCTP_DEBUG_PCB3
Definition: sctp_constants.h:645
SCTP_SCALE_FOR_ADDR
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Definition: sctp_constants.h:266
SCTP_ADDR_NOT_LOCKED
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Definition: sctp_constants.h:938
SCTP_TIMER_TYPE_NEWCOOKIE
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Definition: sctp_constants.h:532
SCTP_HMAC_LIST
#define SCTP_HMAC_LIST
Definition: sctp_constants.h:415
SCTP_RANDOM
#define SCTP_RANDOM
Definition: sctp_constants.h:413
SCTP_IS_TSN_PRESENT
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Definition: sctp_constants.h:868
SCTP_UNRECOG_PARAM
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Definition: sctp_constants.h:391
SCTP_TIMER_PMTU
#define SCTP_TIMER_PMTU
Definition: sctp_constants.h:515
SCTP_DEBUG_PCB1
#define SCTP_DEBUG_PCB1
Definition: sctp_constants.h:643
SCTP_STATE_PARTIAL_MSG_LEFT
#define SCTP_STATE_PARTIAL_MSG_LEFT
Definition: sctp_constants.h:460
SCTP_TIMER_TYPE_ADDR_WQ
#define SCTP_TIMER_TYPE_ADDR_WQ
Definition: sctp_constants.h:541
SCTP_KTHREAD_PAGES
#define SCTP_KTHREAD_PAGES
Definition: sctp_constants.h:90
sctp_header.h
SCTP_MIN_OVERHEAD
#define SCTP_MIN_OVERHEAD
Definition: sctp_header.h:556
SCTP_MIN_V4_OVERHEAD
#define SCTP_MIN_V4_OVERHEAD
Definition: sctp_header.h:566
SCTP_TCB_LOCK
#define SCTP_TCB_LOCK(_tcb)
Definition: sctp_lock_bsd.h:386
SCTP_ITERATOR_UNLOCK
#define SCTP_ITERATOR_UNLOCK()
Definition: sctp_lock_bsd.h:424
SCTP_IPI_ADDR_WUNLOCK
#define SCTP_IPI_ADDR_WUNLOCK()
Definition: sctp_lock_bsd.h:185
SCTP_INP_INFO_WLOCK
#define SCTP_INP_INFO_WLOCK()
Definition: sctp_lock_bsd.h:98
SCTP_INCR_ASOC_COUNT
#define SCTP_INCR_ASOC_COUNT()
Definition: sctp_lock_bsd.h:461
SCTP_IPI_COUNT_INIT
#define SCTP_IPI_COUNT_INIT()
Definition: sctp_lock_bsd.h:76
SCTP_IPI_ADDR_RLOCK
#define SCTP_IPI_ADDR_RLOCK()
Definition: sctp_lock_bsd.h:173
SCTP_STATLOG_DESTROY
#define SCTP_STATLOG_DESTROY()
Definition: sctp_lock_bsd.h:79
SCTP_IPI_ITERATOR_WQ_LOCK
#define SCTP_IPI_ITERATOR_WQ_LOCK()
Definition: sctp_lock_bsd.h:206
SCTP_INP_RLOCK
#define SCTP_INP_RLOCK(_inp)
Definition: sctp_lock_bsd.h:282
SCTP_INP_INFO_RLOCK
#define SCTP_INP_INFO_RLOCK()
Definition: sctp_lock_bsd.h:94
SCTP_ASOC_CREATE_UNLOCK
#define SCTP_ASOC_CREATE_UNLOCK(_inp)
Definition: sctp_lock_bsd.h:333
SCTP_INP_WLOCK_ASSERT
#define SCTP_INP_WLOCK_ASSERT(_inp)
Definition: sctp_lock_bsd.h:304
SCTP_MCORE_QLOCK
#define SCTP_MCORE_QLOCK(cpstr)
Definition: sctp_lock_bsd.h:134
SCTP_STATLOG_INIT_LOCK
#define SCTP_STATLOG_INIT_LOCK()
Definition: sctp_lock_bsd.h:78
SCTP_INP_READ_UNLOCK
#define SCTP_INP_READ_UNLOCK(_inp)
Definition: sctp_lock_bsd.h:250
SCTP_IPI_ITERATOR_WQ_UNLOCK
#define SCTP_IPI_ITERATOR_WQ_UNLOCK()
Definition: sctp_lock_bsd.h:210
SCTP_DECR_LADDR_COUNT
#define SCTP_DECR_LADDR_COUNT()
Definition: sctp_lock_bsd.h:473
SCTP_IPI_ADDR_WLOCK
#define SCTP_IPI_ADDR_WLOCK()
Definition: sctp_lock_bsd.h:177
SCTP_IPI_ADDR_RUNLOCK
#define SCTP_IPI_ADDR_RUNLOCK()
Definition: sctp_lock_bsd.h:181
SCTP_MCORE_QLOCK_INIT
#define SCTP_MCORE_QLOCK_INIT(cpstr)
Definition: sctp_lock_bsd.h:122
SCTP_TCB_SEND_LOCK_DESTROY
#define SCTP_TCB_SEND_LOCK_DESTROY(_tcb)
Definition: sctp_lock_bsd.h:345
SCTP_INP_LOCK_DESTROY
#define SCTP_INP_LOCK_DESTROY(_inp)
Definition: sctp_lock_bsd.h:259
SCTP_INP_INFO_LOCK_INIT
#define SCTP_INP_INFO_LOCK_INIT()
Definition: sctp_lock_bsd.h:83
SCTP_IPI_ADDR_INIT
#define SCTP_IPI_ADDR_INIT()
Definition: sctp_lock_bsd.h:162
SCTP_INCR_LADDR_COUNT
#define SCTP_INCR_LADDR_COUNT()
Definition: sctp_lock_bsd.h:469
SCTP_TCB_LOCK_DESTROY
#define SCTP_TCB_LOCK_DESTROY(_tcb)
Definition: sctp_lock_bsd.h:375
SCTP_INP_WUNLOCK
#define SCTP_INP_WUNLOCK(_inp)
Definition: sctp_lock_bsd.h:295
SCTP_WQ_ADDR_LOCK
#define SCTP_WQ_ADDR_LOCK()
Definition: sctp_lock_bsd.h:440
SCTP_ASOC_CREATE_LOCK_DESTROY
#define SCTP_ASOC_CREATE_LOCK_DESTROY(_inp)
Definition: sctp_lock_bsd.h:317
SCTP_DECR_ASOC_COUNT
#define SCTP_DECR_ASOC_COUNT()
Definition: sctp_lock_bsd.h:465
SCTP_TCB_SEND_UNLOCK
#define SCTP_TCB_SEND_UNLOCK(_tcb)
Definition: sctp_lock_bsd.h:353
SCTP_IPI_ADDR_LOCK_ASSERT
#define SCTP_IPI_ADDR_LOCK_ASSERT()
Definition: sctp_lock_bsd.h:189
SCTP_INP_DECR_REF
#define SCTP_INP_DECR_REF(_inp)
Definition: sctp_lock_bsd.h:310
SCTP_TCB_LOCK_INIT
#define SCTP_TCB_LOCK_INIT(_tcb)
Definition: sctp_lock_bsd.h:370
SCTP_INCR_RADDR_COUNT
#define SCTP_INCR_RADDR_COUNT()
Definition: sctp_lock_bsd.h:477
SCTP_INP_READ_CONTENDED
#define SCTP_INP_READ_CONTENDED(_inp)
Definition: sctp_lock_bsd.h:266
SCTP_WQ_ADDR_INIT
#define SCTP_WQ_ADDR_INIT()
Definition: sctp_lock_bsd.h:428
SCTP_IPI_ADDR_WLOCK_ASSERT
#define SCTP_IPI_ADDR_WLOCK_ASSERT()
Definition: sctp_lock_bsd.h:193
SCTP_IP_PKTLOG_DESTROY
#define SCTP_IP_PKTLOG_DESTROY()
Definition: sctp_lock_bsd.h:219
SCTP_MCORE_UNLOCK
#define SCTP_MCORE_UNLOCK(cpstr)
Definition: sctp_lock_bsd.h:158
SCTP_INP_INFO_LOCK_ASSERT
#define SCTP_INP_INFO_LOCK_ASSERT()
Definition: sctp_lock_bsd.h:110
SCTP_ITERATOR_LOCK
#define SCTP_ITERATOR_LOCK()
Definition: sctp_lock_bsd.h:417
SCTP_INP_INFO_RUNLOCK
#define SCTP_INP_INFO_RUNLOCK()
Definition: sctp_lock_bsd.h:102
SCTP_INP_LOCK_CONTENDED
#define SCTP_INP_LOCK_CONTENDED(_inp)
Definition: sctp_lock_bsd.h:263
SCTP_MCORE_LOCK
#define SCTP_MCORE_LOCK(cpstr)
Definition: sctp_lock_bsd.h:154
SCTP_INP_INFO_LOCK_DESTROY
#define SCTP_INP_INFO_LOCK_DESTROY()
Definition: sctp_lock_bsd.h:87
SCTP_INP_LOCK_INIT
#define SCTP_INP_LOCK_INIT(_inp)
Definition: sctp_lock_bsd.h:254
SCTP_INP_WLOCK
#define SCTP_INP_WLOCK(_inp)
Definition: sctp_lock_bsd.h:286
SCTP_WQ_ADDR_DESTROY
#define SCTP_WQ_ADDR_DESTROY()
Definition: sctp_lock_bsd.h:433
SCTP_TCB_SEND_LOCK_INIT
#define SCTP_TCB_SEND_LOCK_INIT(_tcb)
Definition: sctp_lock_bsd.h:340
SCTP_DECR_CHK_COUNT
#define SCTP_DECR_CHK_COUNT()
Definition: sctp_lock_bsd.h:489
SCTP_DECR_EP_COUNT
#define SCTP_DECR_EP_COUNT()
Definition: sctp_lock_bsd.h:457
SCTP_INCR_EP_COUNT
#define SCTP_INCR_EP_COUNT()
Definition: sctp_lock_bsd.h:453
SCTP_INP_INCR_REF
#define SCTP_INP_INCR_REF(_inp)
Definition: sctp_lock_bsd.h:309
SCTP_MCORE_QUNLOCK
#define SCTP_MCORE_QUNLOCK(cpstr)
Definition: sctp_lock_bsd.h:138
SCTP_WQ_ADDR_UNLOCK
#define SCTP_WQ_ADDR_UNLOCK()
Definition: sctp_lock_bsd.h:444
SCTP_TCB_UNLOCK
#define SCTP_TCB_UNLOCK(_tcb)
Definition: sctp_lock_bsd.h:395
SCTP_ASOC_CREATE_LOCK_INIT
#define SCTP_ASOC_CREATE_LOCK_INIT(_inp)
Definition: sctp_lock_bsd.h:312
SCTP_INP_READ_DESTROY
#define SCTP_INP_READ_DESTROY(_inp)
Definition: sctp_lock_bsd.h:242
SCTP_INP_INFO_WLOCK_ASSERT
#define SCTP_INP_INFO_WLOCK_ASSERT()
Definition: sctp_lock_bsd.h:118
SCTP_ASOC_CREATE_LOCK
#define SCTP_ASOC_CREATE_LOCK(_inp)
Definition: sctp_lock_bsd.h:328
SCTP_INP_INFO_WUNLOCK
#define SCTP_INP_INFO_WUNLOCK()
Definition: sctp_lock_bsd.h:106
SCTP_MCORE_LOCK_INIT
#define SCTP_MCORE_LOCK_INIT(cpstr)
Definition: sctp_lock_bsd.h:142
SCTP_INP_READ_INIT
#define SCTP_INP_READ_INIT(_inp)
Definition: sctp_lock_bsd.h:237
SCTP_TCB_SEND_LOCK
#define SCTP_TCB_SEND_LOCK(_tcb)
Definition: sctp_lock_bsd.h:349
SCTP_IP_PKTLOG_INIT
#define SCTP_IP_PKTLOG_INIT()
Definition: sctp_lock_bsd.h:214
SCTP_INP_READ_LOCK
#define SCTP_INP_READ_LOCK(_inp)
Definition: sctp_lock_bsd.h:246
SCTP_ASOC_CREATE_LOCK_CONTENDED
#define SCTP_ASOC_CREATE_LOCK_CONTENDED(_inp)
Definition: sctp_lock_bsd.h:337
SCTP_INP_RUNLOCK
#define SCTP_INP_RUNLOCK(_inp)
Definition: sctp_lock_bsd.h:291
SCTP_IPI_ADDR_DESTROY
#define SCTP_IPI_ADDR_DESTROY()
Definition: sctp_lock_bsd.h:166
sctp_os.h
SCTP_DEFAULT_VRF
#define SCTP_DEFAULT_VRF
Definition: sctp_os.h:71
SCTP_SOWAKEUP
#define SCTP_SOWAKEUP(so)
Definition: sctp_os_bsd.h:383
SCTP_OS_TIMER_STOP_DRAIN
#define SCTP_OS_TIMER_STOP_DRAIN
Definition: sctp_os_bsd.h:277
SCTP_LTRACE_ERR_RET
#define SCTP_LTRACE_ERR_RET(inp, stcb, net, file, err)
Definition: sctp_os_bsd.h:191
SCTP_ZONE_GET
#define SCTP_ZONE_GET(zone, type)
Definition: sctp_os_bsd.h:251
SCTP_IFN_IS_IFT_LOOP
#define SCTP_IFN_IS_IFT_LOOP(ifn)
Definition: sctp_os_bsd.h:205
SCTP_INIT_VRF_TABLEID
#define SCTP_INIT_VRF_TABLEID(vrf)
Definition: sctp_os_bsd.h:203
MODULE_GLOBAL
#define MODULE_GLOBAL(__SYMBOL)
Definition: sctp_os_bsd.h:142
SCTP_SNPRINTF
#define SCTP_SNPRINTF(...)
Definition: sctp_os_bsd.h:303
SCTP_IFNAMSIZ
#define SCTP_IFNAMSIZ
Definition: sctp_os_bsd.h:199
sctp_route_t
struct route sctp_route_t
Definition: sctp_os_bsd.h:396
SCTP_GATHER_MTU_FROM_IFN_INFO
#define SCTP_GATHER_MTU_FROM_IFN_INFO(ifn, ifn_index)
Definition: sctp_os_bsd.h:316
SCTP_READ_RANDOM
#define SCTP_READ_RANDOM(buf, len)
Definition: sctp_os_bsd.h:446
SCTP_MALLOC
#define SCTP_MALLOC(var, type, size, name)
Definition: sctp_os_bsd.h:219
SCTP_BASE_INFO
#define SCTP_BASE_INFO(__m)
Definition: sctp_os_bsd.h:145
SCTP_DECREMENT_AND_CHECK_REFCOUNT
#define SCTP_DECREMENT_AND_CHECK_REFCOUNT(addr)
Definition: sctp_os_bsd.h:459
SCTP_IPV6_V6ONLY
#define SCTP_IPV6_V6ONLY(sctp_inpcb)
Definition: sctp_os_bsd.h:368
SCTP_PRINTF
#define SCTP_PRINTF(params...)
Definition: sctp_os_bsd.h:151
SCTP_HASH_INIT
#define SCTP_HASH_INIT(size, hashmark)
Definition: sctp_os_bsd.h:258
SCTP_VRF_IFN_HASH_SIZE
#define SCTP_VRF_IFN_HASH_SIZE
Definition: sctp_os_bsd.h:202
SCTP_BASE_VAR
#define SCTP_BASE_VAR(__m)
Definition: sctp_os_bsd.h:149
SCTP_BASE_STATS
#define SCTP_BASE_STATS
Definition: sctp_os_bsd.h:146
SCTP_RTALLOC
#define SCTP_RTALLOC(ro, vrf_id, fibnum)
Definition: sctp_os_bsd.h:398
SCTP_VRF_ADDR_HASH_SIZE
#define SCTP_VRF_ADDR_HASH_SIZE
Definition: sctp_os_bsd.h:201
SCTP_ZONE_INIT
#define SCTP_ZONE_INIT(zone, name, size, number)
Definition: sctp_os_bsd.h:242
SCTP_GATHER_MTU_FROM_ROUTE
#define SCTP_GATHER_MTU_FROM_ROUTE(sctp_ifa, sa, nh)
Definition: sctp_os_bsd.h:317
SCTP_FREE
#define SCTP_FREE(var, type)
Definition: sctp_os_bsd.h:224
SCTP_SO_TYPE
#define SCTP_SO_TYPE(so)
Definition: sctp_os_bsd.h:374
SCTP_DEFAULT_VRFID
#define SCTP_DEFAULT_VRFID
Definition: sctp_os_bsd.h:200
SCTP_SIZE_OF_VRF_HASH
#define SCTP_SIZE_OF_VRF_HASH
Definition: sctp_os_bsd.h:198
SCTPDBG
#define SCTPDBG(level, params...)
Definition: sctp_os_bsd.h:170
SCTP_ZONE_FREE
#define SCTP_ZONE_FREE(zone, element)
Definition: sctp_os_bsd.h:255
SCTP_IS_LISTENING
#define SCTP_IS_LISTENING(inp)
Definition: sctp_os_bsd.h:480
SCTP_BASE_SYSCTL
#define SCTP_BASE_SYSCTL(__m)
Definition: sctp_os_bsd.h:148
SCTP_CLEAR_SO_NBIO
#define SCTP_CLEAR_SO_NBIO(so)
Definition: sctp_os_bsd.h:372
SCTP_BASE_STAT
#define SCTP_BASE_STAT(__m)
Definition: sctp_os_bsd.h:147
SCTP_ROUTE_HAS_VALID_IFN
#define SCTP_ROUTE_HAS_VALID_IFN(ro)
Definition: sctp_os_bsd.h:214
SCTPDBG_ADDR
#define SCTPDBG_ADDR(level, addr)
Definition: sctp_os_bsd.h:171
SCTP_SB_LIMIT_RCV
#define SCTP_SB_LIMIT_RCV(so)
Definition: sctp_os_bsd.h:390
SCTP_HASH_FREE
#define SCTP_HASH_FREE(table, hashmark)
Definition: sctp_os_bsd.h:259
SCTP_ZONE_DESTROY
#define SCTP_ZONE_DESTROY(zone)
Definition: sctp_os_bsd.h:248
SCTP_OS_TIMER_INIT
#define SCTP_OS_TIMER_INIT(tmr)
Definition: sctp_os_bsd.h:269
sctp_is_addr_restricted
int sctp_is_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
Definition: sctp_output.c:2407
sctp_source_address_selection
struct sctp_ifa * sctp_source_address_selection(struct sctp_inpcb *inp, struct sctp_tcb *stcb, sctp_route_t *ro, struct sctp_nets *net, int non_asoc_addr_ok, uint32_t vrf_id)
Definition: sctp_output.c:3297
sctp_send_sack
void sctp_send_sack(struct sctp_tcb *stcb, int so_locked)
Definition: sctp_output.c:10478
sctp_send_abort_tcb
void sctp_send_abort_tcb(struct sctp_tcb *stcb, struct mbuf *operr, int so_locked)
Definition: sctp_output.c:10871
sctp_send_shutdown
void sctp_send_shutdown(struct sctp_tcb *stcb, struct sctp_nets *net)
Definition: sctp_output.c:9206
sctp_chunk_output
void sctp_chunk_output(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_where, int so_locked)
Definition: sctp_output.c:9960
sctp_output.h
sctp_inpcb_alloc
int sctp_inpcb_alloc(struct socket *so, uint32_t vrf_id)
Definition: sctp_pcb.c:2379
sctp_select_primary_destination
static void sctp_select_primary_destination(struct sctp_tcb *stcb)
Definition: sctp_pcb.c:5383
sctp_add_local_addr_ep
void sctp_add_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa, uint32_t action)
Definition: sctp_pcb.c:5321
sctp_scale_up_for_address
static int sctp_scale_up_for_address
Definition: sctp_pcb.c:5552
sctp_remove_ifa_from_ifn
static void sctp_remove_ifa_from_ifn(struct sctp_ifa *sctp_ifap)
Definition: sctp_pcb.c:433
sctp_is_address_on_local_host
int sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id)
Definition: sctp_pcb.c:3703
sctp_findasoc_ep_asocid_locked
struct sctp_tcb * sctp_findasoc_ep_asocid_locked(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
Definition: sctp_pcb.c:1540
sctp_does_stcb_own_this_addr
static int sctp_does_stcb_own_this_addr(struct sctp_tcb *stcb, struct sockaddr *to)
Definition: sctp_pcb.c:826
sctp_pcb_finish
void sctp_pcb_finish(void)
Definition: sctp_pcb.c:5856
sctp_aloc_assoc_locked
static struct sctp_tcb * sctp_aloc_assoc_locked(struct sctp_inpcb *inp, struct sockaddr *firstaddr, int *error, uint32_t override_tag, uint32_t initial_tsn, uint32_t vrf_id, uint16_t o_streams, uint16_t port, struct thread *p, int initialize_auth_params)
Definition: sctp_pcb.c:4174
sctp_aloc_assoc_connected
struct sctp_tcb * sctp_aloc_assoc_connected(struct sctp_inpcb *inp, struct sockaddr *firstaddr, int *error, uint32_t override_tag, uint32_t initial_tsn, uint32_t vrf_id, uint16_t o_streams, uint16_t port, struct thread *p, int initialize_auth_params)
Definition: sctp_pcb.c:4418
sctp_del_remote_addr
int sctp_del_remote_addr(struct sctp_tcb *stcb, struct sockaddr *remaddr)
Definition: sctp_pcb.c:4517
sctp_mark_ifa_addr_down
void sctp_mark_ifa_addr_down(uint32_t vrf_id, struct sockaddr *addr, const char *if_name, uint32_t ifn_index)
Definition: sctp_pcb.c:307
sctp_max_number_of_assoc
static int sctp_max_number_of_assoc
Definition: sctp_pcb.c:5551
sctp_add_addr_to_vrf
struct sctp_ifa * sctp_add_addr_to_vrf(uint32_t vrf_id, void *ifn, uint32_t ifn_index, uint32_t ifn_type, const char *if_name, void *ifa, struct sockaddr *addr, uint32_t ifa_flags, int dynamic_add)
Definition: sctp_pcb.c:474
sctp_findassociation_ep_asconf
struct sctp_tcb * sctp_findassociation_ep_asconf(struct mbuf *m, int offset, struct sockaddr *dst, struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
Definition: sctp_pcb.c:2273
sctp_del_local_addr_ep
void sctp_del_local_addr_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa)
Definition: sctp_pcb.c:5405
sctp_insert_laddr
static int sctp_insert_laddr(struct sctpladdr *list, struct sctp_ifa *ifa, uint32_t act)
Definition: sctp_pcb.c:2781
sctp_is_in_timewait
static bool sctp_is_in_timewait(uint32_t tag, uint16_t lport, uint16_t rport, uint32_t now)
Definition: sctp_pcb.c:4553
sctp_set_vtag_block
static void sctp_set_vtag_block(struct sctp_timewait *vtag_block, uint32_t time, uint32_t tag, uint16_t lport, uint16_t rport)
Definition: sctp_pcb.c:4575
sctp_del_local_addr_restricted
void sctp_del_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
Definition: sctp_pcb.c:5512
sctp_free_ifa
void sctp_free_ifa(struct sctp_ifa *sctp_ifap)
Definition: sctp_pcb.c:270
sctp_allocate_vrf
struct sctp_vrf * sctp_allocate_vrf(int vrf_id)
Definition: sctp_pcb.c:145
sctp_add_ifa_to_ifn
static void sctp_add_ifa_to_ifn(struct sctp_ifn *sctp_ifnp, struct sctp_ifa *sctp_ifap)
Definition: sctp_pcb.c:396
sctp_tcb_special_locate
static struct sctp_tcb * sctp_tcb_special_locate(struct sctp_inpcb **inp_p, struct sockaddr *from, struct sockaddr *to, struct sctp_nets **netp, uint32_t vrf_id)
Definition: sctp_pcb.c:999
sctp_aloc_a_assoc_id
static uint32_t sctp_aloc_a_assoc_id(struct sctp_inpcb *inp, struct sctp_tcb *stcb)
Definition: sctp_pcb.c:4138
sctp_destination_is_reachable
int sctp_destination_is_reachable(struct sctp_tcb *stcb, struct sockaddr *destaddr)
Definition: sctp_pcb.c:5233
sctp_delete_ifn
static void sctp_delete_ifn(struct sctp_ifn *sctp_ifnp, int hold_addr_lock)
Definition: sctp_pcb.c:283
sctp_mark_ifa_addr_up
void sctp_mark_ifa_addr_up(uint32_t vrf_id, struct sockaddr *addr, const char *if_name, uint32_t ifn_index)
Definition: sctp_pcb.c:349
__FBSDID
__FBSDID("$FreeBSD$")
sctp_fill_pcbinfo
void sctp_fill_pcbinfo(struct sctp_pcbinfo *spcb)
Definition: sctp_pcb.c:81
sctp_inpcb_bind_locked
int sctp_inpcb_bind_locked(struct sctp_inpcb *inp, struct sockaddr *addr, struct sctp_ifa *sctp_ifap, struct thread *td)
Definition: sctp_pcb.c:2824
sctp_findassociation_addr_sa
struct sctp_tcb * sctp_findassociation_addr_sa(struct sockaddr *from, struct sockaddr *to, struct sctp_inpcb **inp_p, struct sctp_nets **netp, int find_tcp_pool, uint32_t vrf_id)
Definition: sctp_pcb.c:1969
sctp_iterator_inp_being_freed
static void sctp_iterator_inp_being_freed(struct sctp_inpcb *inp)
Definition: sctp_pcb.c:3241
sctp_add_vtag_to_timewait
static void sctp_add_vtag_to_timewait(uint32_t tag, uint16_t lport, uint16_t rport)
Definition: sctp_pcb.c:4585
sctp_findassociation_special_addr
static struct sctp_tcb * sctp_findassociation_special_addr(struct mbuf *m, int offset, struct sctphdr *sh, struct sctp_inpcb **inp_p, struct sctp_nets **netp, struct sockaddr *dst)
Definition: sctp_pcb.c:2020
sctp_free_ifn
void sctp_free_ifn(struct sctp_ifn *sctp_ifnp)
Definition: sctp_pcb.c:246
sctp_inpcb_bind
int sctp_inpcb_bind(struct socket *so, struct sockaddr *addr, struct sctp_ifa *sctp_ifap, struct thread *td)
Definition: sctp_pcb.c:3225
sctp_isport_inuse
static struct sctp_inpcb * sctp_isport_inuse(struct sctp_inpcb *inp, uint16_t lport, uint32_t vrf_id)
Definition: sctp_pcb.c:1790
sctp_pcb_findep
struct sctp_inpcb * sctp_pcb_findep(struct sockaddr *nam, int find_tcp_pool, int have_lock, uint32_t vrf_id)
Definition: sctp_pcb.c:1888
sctp_findassociation_ep_asocid
struct sctp_tcb * sctp_findassociation_ep_asocid(struct sctp_inpcb *inp, sctp_assoc_t asoc_id, int want_lock)
Definition: sctp_pcb.c:1583
sctp_swap_inpcb_for_listen
int sctp_swap_inpcb_for_listen(struct sctp_inpcb *inp)
Definition: sctp_pcb.c:1838
sctp_remove_laddr
static void sctp_remove_laddr(struct sctp_laddr *laddr)
Definition: sctp_pcb.c:2807
sctp_findassociation_addr
struct sctp_tcb * sctp_findassociation_addr(struct mbuf *m, int offset, struct sockaddr *src, struct sockaddr *dst, struct sctphdr *sh, struct sctp_chunkhdr *ch, struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint32_t vrf_id)
Definition: sctp_pcb.c:2213
sctp_remove_net
void sctp_remove_net(struct sctp_tcb *stcb, struct sctp_nets *net)
Definition: sctp_pcb.c:4447
sctp_inpcb_free
void sctp_inpcb_free(struct sctp_inpcb *inp, int immediate, int from)
Definition: sctp_pcb.c:3311
sctp_aloc_assoc
struct sctp_tcb * sctp_aloc_assoc(struct sctp_inpcb *inp, struct sockaddr *firstaddr, int *error, uint32_t override_tag, uint32_t initial_tsn, uint32_t vrf_id, uint16_t o_streams, uint16_t port, struct thread *p, int initialize_auth_params)
Definition: sctp_pcb.c:4400
sctp_pcb_init
void sctp_pcb_init(void)
Definition: sctp_pcb.c:5709
sctp_add_remote_addr
int sctp_add_remote_addr(struct sctp_tcb *stcb, struct sockaddr *newaddr, struct sctp_nets **netp, uint16_t port, int set_scope, int from)
Definition: sctp_pcb.c:3721
sctp_update_ep_vflag
static void sctp_update_ep_vflag(struct sctp_inpcb *inp)
Definition: sctp_pcb.c:5282
sctp_find_ifn
struct sctp_ifn * sctp_find_ifn(void *ifn, uint32_t ifn_index)
Definition: sctp_pcb.c:193
sctp_clean_up_stream
void sctp_clean_up_stream(struct sctp_tcb *stcb, struct sctp_readhead *rh)
Definition: sctp_pcb.c:4641
sctp_initiate_iterator
int sctp_initiate_iterator(inp_func inpf, asoc_func af, inp_func inpe, uint32_t pcb_state, uint32_t pcb_features, uint32_t asoc_state, void *argp, uint32_t argi, end_func ef, struct sctp_inpcb *s_inp, uint8_t chunk_output_off)
Definition: sctp_pcb.c:7007
sctp_findnet
struct sctp_nets * sctp_findnet(struct sctp_tcb *stcb, struct sockaddr *addr)
Definition: sctp_pcb.c:3690
sctp_load_addresses_from_init
int sctp_load_addresses_from_init(struct sctp_tcb *stcb, struct mbuf *m, int offset, int limit, struct sockaddr *src, struct sockaddr *dst, struct sockaddr *altsa, uint16_t port)
Definition: sctp_pcb.c:6003
sctp_is_vtag_good
bool sctp_is_vtag_good(uint32_t tag, uint16_t lport, uint16_t rport, struct timeval *now)
Definition: sctp_pcb.c:6720
sctp_drain_mbufs
static void sctp_drain_mbufs(struct sctp_tcb *stcb)
Definition: sctp_pcb.c:6754
sctp_free_assoc
int sctp_free_assoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int from_inpcbfree, int from_location)
Definition: sctp_pcb.c:4689
sctp_findassociation_ep_addr
struct sctp_tcb * sctp_findassociation_ep_addr(struct sctp_inpcb **inp_p, struct sockaddr *remote, struct sctp_nets **netp, struct sockaddr *local, struct sctp_tcb *locked_tcb)
Definition: sctp_pcb.c:1259
sctp_add_local_addr_restricted
void sctp_add_local_addr_restricted(struct sctp_tcb *stcb, struct sctp_ifa *ifa)
Definition: sctp_pcb.c:5477
sctp_update_ifn_mtu
void sctp_update_ifn_mtu(uint32_t ifn_index, uint32_t mtu)
Definition: sctp_pcb.c:259
sctp_free_vrf
void sctp_free_vrf(struct sctp_vrf *vrf)
Definition: sctp_pcb.c:231
sctp_endpoint_probe
static struct sctp_inpcb * sctp_endpoint_probe(struct sockaddr *nam, struct sctppcbhead *head, uint16_t lport, uint32_t vrf_id)
Definition: sctp_pcb.c:1597
sctp_set_primary_addr
int sctp_set_primary_addr(struct sctp_tcb *stcb, struct sockaddr *sa, struct sctp_nets *net)
Definition: sctp_pcb.c:6683
sctp_findassoc_by_vtag
static struct sctp_tcb * sctp_findassoc_by_vtag(struct sockaddr *from, struct sockaddr *to, uint32_t vtag, struct sctp_inpcb **inp_p, struct sctp_nets **netp, uint16_t rport, uint16_t lport, int skip_src_check, uint32_t vrf_id, uint32_t remote_tag)
Definition: sctp_pcb.c:2112
sctp_del_addr_from_vrf
void sctp_del_addr_from_vrf(uint32_t vrf_id, struct sockaddr *addr, uint32_t ifn_index, const char *if_name)
Definition: sctp_pcb.c:718
sctp_drain
void sctp_drain()
Definition: sctp_pcb.c:6957
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Definition: in_pcb.h:254
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Definition: in_pcb.h:278
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Definition: sctp_pcb.h:71
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struct sctp_ifalist * vrf_addr_hash
Definition: sctp_pcb.h:64
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Definition: sctp.h:48
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uint16_t src_port
Definition: sctp.h:49
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uint32_t v_tag
Definition: sctp.h:51
sctphdr::dest_port
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Definition: sctp.h:50
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Definition: in.h:97
sockaddr_in::sin_zero
char sin_zero[8]
Definition: in.h:102
sockaddr_in::sin_addr
struct in_addr sin_addr
Definition: in.h:101
sockaddr_in::sin_len
uint8_t sin_len
Definition: in.h:98
sockaddr_in::sin_family
sa_family_t sin_family
Definition: in.h:99
sockaddr_in::sin_port
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Definition: in.h:100
udphdr
Definition: udp.h:45
v6
struct in6_addr v6
Definition: tcp_lro.h:16
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sctp_sockstore::sin6
struct sockaddr_in6 sin6
Definition: sctp_uio.h:629
sctp_sockstore::sa
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Definition: sctp_uio.h:630
sctp_sockstore::sin
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Definition: sctp_uio.h:628