1 /* $KAME: sctp6_usrreq.c,v 1.38 2005/08/24 08:08:56 suz Exp $ */ 2 /* $NetBSD: sctp6_usrreq.c,v 1.4 2016/04/25 21:21:02 rjs Exp $ */ 3 4 /* 5 * Copyright (c) 2001, 2002, 2003, 2004 Cisco Systems, Inc. 6 * 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 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Cisco Systems, Inc. 19 * 4. Neither the name of the project nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY CISCO SYSTEMS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL CISCO SYSTEMS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 #include <sys/cdefs.h> 36 __KERNEL_RCSID(0, "$NetBSD: sctp6_usrreq.c,v 1.4 2016/04/25 21:21:02 rjs Exp $"); 37 38 #ifdef _KERNEL_OPT 39 #include "opt_inet.h" 40 #include "opt_ipsec.h" 41 #include "opt_sctp.h" 42 #endif /* _KERNEL_OPT */ 43 44 #include <sys/param.h> 45 #include <sys/kernel.h> 46 #include <sys/mbuf.h> 47 #include <sys/domain.h> 48 #include <sys/protosw.h> 49 #include <sys/socket.h> 50 #include <sys/malloc.h> 51 #include <sys/socketvar.h> 52 #include <sys/sysctl.h> 53 #include <sys/errno.h> 54 #include <sys/stat.h> 55 #include <sys/systm.h> 56 #include <sys/syslog.h> 57 #include <sys/proc.h> 58 #include <net/if.h> 59 #include <net/route.h> 60 #include <net/if_types.h> 61 #include <netinet/in.h> 62 #include <netinet/in_systm.h> 63 #include <netinet/ip.h> 64 #include <netinet/in_pcb.h> 65 #include <netinet/in_var.h> 66 #include <netinet/ip_var.h> 67 #include <netinet/sctp_pcb.h> 68 #include <netinet/sctp_header.h> 69 #include <netinet/sctp_var.h> 70 #include <netinet/sctputil.h> 71 #include <netinet/sctp_output.h> 72 #include <netinet/sctp_input.h> 73 #include <netinet/sctp_asconf.h> 74 #include <netinet6/ip6_var.h> 75 #include <netinet6/scope6_var.h> 76 #include <netinet/ip6.h> 77 #include <netinet6/in6_pcb.h> 78 #include <netinet/icmp6.h> 79 #include <netinet6/sctp6_var.h> 80 #include <netinet6/ip6protosw.h> 81 #include <netinet6/nd6.h> 82 83 #ifdef IPSEC 84 #include <netipsec/ipsec.h> 85 #include <netipsec/ipsec6.h> 86 #endif /*IPSEC*/ 87 88 #if defined(NFAITH) && NFAITH > 0 89 #include <net/if_faith.h> 90 #endif 91 92 #include <net/net_osdep.h> 93 94 extern struct protosw inetsw[]; 95 96 #if defined(HAVE_NRL_INPCB) || defined(__FreeBSD__) 97 #ifndef in6pcb 98 #define in6pcb inpcb 99 #endif 100 #ifndef sotoin6pcb 101 #define sotoin6pcb sotoinpcb 102 #endif 103 #endif 104 105 #ifdef SCTP_DEBUG 106 extern u_int32_t sctp_debug_on; 107 #endif 108 109 static int sctp6_detach(struct socket *so); 110 111 extern int sctp_no_csum_on_loopback; 112 113 int 114 sctp6_input(struct mbuf **mp, int *offp, int proto) 115 { 116 struct mbuf *m = *mp; 117 struct ip6_hdr *ip6; 118 struct sctphdr *sh; 119 struct sctp_inpcb *in6p = NULL; 120 struct sctp_nets *net; 121 int refcount_up = 0; 122 u_int32_t check, calc_check; 123 struct inpcb *in6p_ip; 124 struct sctp_chunkhdr *ch; 125 struct mbuf *opts = NULL; 126 int length, mlen, offset, iphlen; 127 u_int8_t ecn_bits; 128 struct sctp_tcb *stcb = NULL; 129 int off = *offp; 130 int s; 131 132 ip6 = mtod(m, struct ip6_hdr *); 133 /* Ensure that (sctphdr + sctp_chunkhdr) in a row. */ 134 IP6_EXTHDR_GET(sh, struct sctphdr *, m, off, sizeof(*sh) + sizeof(*ch)); 135 if (sh == NULL) { 136 sctp_pegs[SCTP_HDR_DROPS]++; 137 return IPPROTO_DONE; 138 } 139 ch = (struct sctp_chunkhdr *)((vaddr_t)sh + sizeof(struct sctphdr)); 140 141 iphlen = off; 142 offset = iphlen + sizeof(*sh) + sizeof(*ch); 143 144 #if defined(NFAITH) && NFAITH > 0 145 if (faithprefix(&ip6->ip6_dst)) 146 goto bad; 147 #endif /* NFAITH defined and > 0 */ 148 sctp_pegs[SCTP_INPKTS]++; 149 #ifdef SCTP_DEBUG 150 if (sctp_debug_on & SCTP_DEBUG_INPUT1) { 151 printf("V6 input gets a packet iphlen:%d pktlen:%d\n", iphlen, m->m_pkthdr.len); 152 } 153 #endif 154 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) { 155 /* No multi-cast support in SCTP */ 156 sctp_pegs[SCTP_IN_MCAST]++; 157 goto bad; 158 } 159 /* destination port of 0 is illegal, based on RFC2960. */ 160 if (sh->dest_port == 0) 161 goto bad; 162 if ((sctp_no_csum_on_loopback == 0) || 163 (m->m_pkthdr.rcvif == NULL) || 164 (m->m_pkthdr.rcvif->if_type != IFT_LOOP)) { 165 /* we do NOT validate things from the loopback if the 166 * sysctl is set to 1. 167 */ 168 check = sh->checksum; /* save incoming checksum */ 169 if ((check == 0) && (sctp_no_csum_on_loopback)) { 170 /* special hook for where we got a local address 171 * somehow routed across a non IFT_LOOP type interface 172 */ 173 if (IN6_ARE_ADDR_EQUAL(&ip6->ip6_src, &ip6->ip6_dst)) 174 goto sctp_skip_csum; 175 } 176 sh->checksum = 0; /* prepare for calc */ 177 calc_check = sctp_calculate_sum(m, &mlen, iphlen); 178 if (calc_check != check) { 179 #ifdef SCTP_DEBUG 180 if (sctp_debug_on & SCTP_DEBUG_INPUT1) { 181 printf("Bad CSUM on SCTP packet calc_check:%x check:%x m:%p mlen:%d iphlen:%d\n", 182 calc_check, check, m, 183 mlen, iphlen); 184 } 185 #endif 186 stcb = sctp_findassociation_addr(m, iphlen, offset - sizeof(*ch), 187 sh, ch, &in6p, &net); 188 /* in6p's ref-count increased && stcb locked */ 189 if ((in6p) && (stcb)) { 190 sctp_send_packet_dropped(stcb, net, m, iphlen, 1); 191 sctp_chunk_output((struct sctp_inpcb *)in6p, stcb, 2); 192 } else if ((in6p != NULL) && (stcb == NULL)) { 193 refcount_up = 1; 194 } 195 sctp_pegs[SCTP_BAD_CSUM]++; 196 goto bad; 197 } 198 sh->checksum = calc_check; 199 } else { 200 sctp_skip_csum: 201 mlen = m->m_pkthdr.len; 202 } 203 net = NULL; 204 /* 205 * Locate pcb and tcb for datagram 206 * sctp_findassociation_addr() wants IP/SCTP/first chunk header... 207 */ 208 #ifdef SCTP_DEBUG 209 if (sctp_debug_on & SCTP_DEBUG_INPUT1) { 210 printf("V6 Find the association\n"); 211 } 212 #endif 213 stcb = sctp_findassociation_addr(m, iphlen, offset - sizeof(*ch), 214 sh, ch, &in6p, &net); 215 /* in6p's ref-count increased */ 216 if (in6p == NULL) { 217 struct sctp_init_chunk *init_chk, chunk_buf; 218 219 sctp_pegs[SCTP_NOPORTS]++; 220 if (ch->chunk_type == SCTP_INITIATION) { 221 /* we do a trick here to get the INIT tag, 222 * dig in and get the tag from the INIT and 223 * put it in the common header. 224 */ 225 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m, 226 iphlen + sizeof(*sh), sizeof(*init_chk), 227 (u_int8_t *)&chunk_buf); 228 sh->v_tag = init_chk->init.initiate_tag; 229 } 230 sctp_send_abort(m, iphlen, sh, 0, NULL); 231 goto bad; 232 } else if (stcb == NULL) { 233 refcount_up = 1; 234 } 235 in6p_ip = (struct inpcb *)in6p; 236 #ifdef IPSEC 237 /* 238 * Check AH/ESP integrity. 239 */ 240 if (ipsec_used && ipsec6_in_reject_so(m, in6p->sctp_socket)) { 241 /* XXX */ 242 #if 0 243 /* FIX ME: need to find right stat */ 244 ipsec6stat.in_polvio++; 245 #endif 246 goto bad; 247 } 248 #endif /*IPSEC*/ 249 250 /* 251 * Construct sockaddr format source address. 252 * Stuff source address and datagram in user buffer. 253 */ 254 if ((in6p->ip_inp.inp.inp_flags & INP_CONTROLOPTS) 255 #ifndef __OpenBSD__ 256 || (in6p->sctp_socket->so_options & SO_TIMESTAMP) 257 #endif 258 ) { 259 #if defined(__FreeBSD__) || defined(__APPLE__) 260 #if (defined(SCTP_BASE_FREEBSD) && __FreeBSD_version < 501113) || defined(__APPLE__) 261 ip6_savecontrol(in6p_ip, &opts, ip6, m); 262 #elif __FreeBSD_version >= 440000 || (defined(SCTP_BASE_FREEBSD) && __FreeBSD_version >= 501113) 263 ip6_savecontrol(in6p_ip, m, &opts); 264 #else 265 ip6_savecontrol(in6p_ip, m, &opts, NULL); 266 #endif 267 #elif defined(__NetBSD__) 268 ip6_savecontrol((struct in6pcb *)in6p_ip, &opts, ip6, m); 269 #else 270 ip6_savecontrol((struct in6pcb *)in6p_ip, m, &opts); 271 #endif 272 } 273 274 /* 275 * CONTROL chunk processing 276 */ 277 length = ntohs(ip6->ip6_plen) + iphlen; 278 offset -= sizeof(*ch); 279 ecn_bits = ((ntohl(ip6->ip6_flow) >> 20) & 0x000000ff); 280 s = splsoftnet(); 281 (void)sctp_common_input_processing(&m, iphlen, offset, length, sh, ch, 282 in6p, stcb, net, ecn_bits); 283 /* inp's ref-count reduced && stcb unlocked */ 284 splx(s); 285 /* XXX this stuff below gets moved to appropriate parts later... */ 286 if (m) 287 m_freem(m); 288 if (opts) 289 m_freem(opts); 290 291 if ((in6p) && refcount_up){ 292 /* reduce ref-count */ 293 SCTP_INP_WLOCK(in6p); 294 SCTP_INP_DECR_REF(in6p); 295 SCTP_INP_WUNLOCK(in6p); 296 } 297 298 return IPPROTO_DONE; 299 300 bad: 301 if (stcb) { 302 SCTP_TCB_UNLOCK(stcb); 303 } 304 305 if ((in6p) && refcount_up){ 306 /* reduce ref-count */ 307 SCTP_INP_WLOCK(in6p); 308 SCTP_INP_DECR_REF(in6p); 309 SCTP_INP_WUNLOCK(in6p); 310 } 311 if (m) { 312 m_freem(m); 313 } 314 if (opts) { 315 m_freem(opts); 316 } 317 return IPPROTO_DONE; 318 } 319 320 321 static void 322 sctp6_notify_mbuf(struct sctp_inpcb *inp, 323 struct icmp6_hdr *icmp6, 324 struct sctphdr *sh, 325 struct sctp_tcb *stcb, 326 struct sctp_nets *net) 327 { 328 unsigned int nxtsz; 329 330 if ((inp == NULL) || (stcb == NULL) || (net == NULL) || 331 (icmp6 == NULL) || (sh == NULL)) { 332 goto out; 333 } 334 335 /* First do we even look at it? */ 336 if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) 337 goto out; 338 339 if (icmp6->icmp6_type != ICMP6_PACKET_TOO_BIG) { 340 /* not PACKET TO BIG */ 341 goto out; 342 } 343 /* 344 * ok we need to look closely. We could even get smarter and 345 * look at anyone that we sent to in case we get a different 346 * ICMP that tells us there is no way to reach a host, but for 347 * this impl, all we care about is MTU discovery. 348 */ 349 nxtsz = ntohl(icmp6->icmp6_mtu); 350 /* Stop any PMTU timer */ 351 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL); 352 353 /* Adjust destination size limit */ 354 if (net->mtu > nxtsz) { 355 net->mtu = nxtsz; 356 } 357 /* now what about the ep? */ 358 if (stcb->asoc.smallest_mtu > nxtsz) { 359 struct sctp_tmit_chunk *chk; 360 struct sctp_stream_out *strm; 361 /* Adjust that too */ 362 stcb->asoc.smallest_mtu = nxtsz; 363 /* now off to subtract IP_DF flag if needed */ 364 365 TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) { 366 if ((chk->send_size+IP_HDR_SIZE) > nxtsz) { 367 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 368 } 369 } 370 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { 371 if ((chk->send_size+IP_HDR_SIZE) > nxtsz) { 372 /* 373 * For this guy we also mark for immediate 374 * resend since we sent to big of chunk 375 */ 376 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 377 if (chk->sent != SCTP_DATAGRAM_RESEND) 378 stcb->asoc.sent_queue_retran_cnt++; 379 chk->sent = SCTP_DATAGRAM_RESEND; 380 chk->rec.data.doing_fast_retransmit = 0; 381 382 chk->sent = SCTP_DATAGRAM_RESEND; 383 /* Clear any time so NO RTT is being done */ 384 chk->sent_rcv_time.tv_sec = 0; 385 chk->sent_rcv_time.tv_usec = 0; 386 stcb->asoc.total_flight -= chk->send_size; 387 net->flight_size -= chk->send_size; 388 } 389 } 390 TAILQ_FOREACH(strm, &stcb->asoc.out_wheel, next_spoke) { 391 TAILQ_FOREACH(chk, &strm->outqueue, sctp_next) { 392 if ((chk->send_size+IP_HDR_SIZE) > nxtsz) { 393 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 394 } 395 } 396 } 397 } 398 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL); 399 out: 400 if (inp) { 401 /* reduce inp's ref-count */ 402 SCTP_INP_WLOCK(inp); 403 SCTP_INP_DECR_REF(inp); 404 SCTP_INP_WUNLOCK(inp); 405 } 406 if (stcb) { 407 SCTP_TCB_UNLOCK(stcb); 408 } 409 } 410 411 412 void * 413 sctp6_ctlinput(int cmd, const struct sockaddr *pktdst, void *d) 414 { 415 struct sctphdr sh; 416 struct ip6ctlparam *ip6cp = NULL; 417 int s, cm; 418 419 if (pktdst->sa_family != AF_INET6 || 420 pktdst->sa_len != sizeof(struct sockaddr_in6)) 421 return NULL; 422 423 if ((unsigned)cmd >= PRC_NCMDS) 424 return NULL; 425 if (PRC_IS_REDIRECT(cmd)) { 426 d = NULL; 427 } else if (inet6ctlerrmap[cmd] == 0) { 428 return NULL; 429 } 430 431 /* if the parameter is from icmp6, decode it. */ 432 if (d != NULL) { 433 ip6cp = (struct ip6ctlparam *)d; 434 } else { 435 ip6cp = (struct ip6ctlparam *)NULL; 436 } 437 438 if (ip6cp) { 439 /* 440 * XXX: We assume that when IPV6 is non NULL, 441 * M and OFF are valid. 442 */ 443 /* check if we can safely examine src and dst ports */ 444 struct sctp_inpcb *inp; 445 struct sctp_tcb *stcb; 446 struct sctp_nets *net; 447 struct sockaddr_in6 final; 448 449 if (ip6cp->ip6c_m == NULL || 450 (size_t)ip6cp->ip6c_m->m_pkthdr.len < (ip6cp->ip6c_off + sizeof(sh))) 451 return NULL; 452 453 memset(&sh, 0, sizeof(sh)); 454 memset(&final, 0, sizeof(final)); 455 inp = NULL; 456 net = NULL; 457 m_copydata(ip6cp->ip6c_m, ip6cp->ip6c_off, sizeof(sh), 458 (void *)&sh); 459 ip6cp->ip6c_src->sin6_port = sh.src_port; 460 final.sin6_len = sizeof(final); 461 final.sin6_family = AF_INET6; 462 final.sin6_addr = ((const struct sockaddr_in6 *)pktdst)->sin6_addr; 463 final.sin6_port = sh.dest_port; 464 s = splsoftnet(); 465 stcb = sctp_findassociation_addr_sa((struct sockaddr *)ip6cp->ip6c_src, 466 (struct sockaddr *)&final, 467 &inp, &net, 1); 468 /* inp's ref-count increased && stcb locked */ 469 if (stcb != NULL && inp && (inp->sctp_socket != NULL)) { 470 if (cmd == PRC_MSGSIZE) { 471 sctp6_notify_mbuf(inp, 472 ip6cp->ip6c_icmp6, 473 &sh, 474 stcb, 475 net); 476 /* inp's ref-count reduced && stcb unlocked */ 477 } else { 478 if (cmd == PRC_HOSTDEAD) { 479 cm = EHOSTUNREACH; 480 } else { 481 cm = inet6ctlerrmap[cmd]; 482 } 483 sctp_notify(inp, cm, &sh, 484 (struct sockaddr *)&final, 485 stcb, net); 486 /* inp's ref-count reduced && stcb unlocked */ 487 } 488 } else { 489 if (PRC_IS_REDIRECT(cmd) && inp) { 490 in6_rtchange((struct in6pcb *)inp, 491 inet6ctlerrmap[cmd]); 492 } 493 if (inp) { 494 /* reduce inp's ref-count */ 495 SCTP_INP_WLOCK(inp); 496 SCTP_INP_DECR_REF(inp); 497 SCTP_INP_WUNLOCK(inp); 498 } 499 if (stcb) { 500 SCTP_TCB_UNLOCK(stcb); 501 } 502 } 503 splx(s); 504 } 505 return NULL; 506 } 507 508 /* 509 * this routine can probably be collasped into the one in sctp_userreq.c 510 * since they do the same thing and now we lookup with a sockaddr 511 */ 512 #ifdef __FreeBSD__ 513 static int 514 sctp6_getcred(SYSCTL_HANDLER_ARGS) 515 { 516 struct sockaddr_in6 addrs[2]; 517 struct sctp_inpcb *inp; 518 struct sctp_nets *net; 519 struct sctp_tcb *stcb; 520 int error, s; 521 522 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000 523 error = suser(req->td); 524 #else 525 error = suser(req->p); 526 #endif 527 if (error) 528 return (error); 529 530 if (req->newlen != sizeof(addrs)) 531 return (EINVAL); 532 if (req->oldlen != sizeof(struct ucred)) 533 return (EINVAL); 534 error = SYSCTL_IN(req, addrs, sizeof(addrs)); 535 if (error) 536 return (error); 537 s = splsoftnet(); 538 539 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[0]), 540 sin6tosa(&addrs[1]), 541 &inp, &net, 1); 542 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) { 543 error = ENOENT; 544 if (inp) { 545 SCTP_INP_WLOCK(inp); 546 SCTP_INP_DECR_REF(inp); 547 SCTP_INP_WUNLOCK(inp); 548 } 549 goto out; 550 } 551 error = SYSCTL_OUT(req, inp->sctp_socket->so_cred, 552 sizeof(struct ucred)); 553 554 SCTP_TCB_UNLOCK (stcb); 555 out: 556 splx(s); 557 return (error); 558 } 559 560 SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE|CTLFLAG_RW, 561 0, 0, 562 sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection"); 563 564 #endif 565 566 /* This is the same as the sctp_abort() could be made common */ 567 static int 568 sctp6_abort(struct socket *so) 569 { 570 int s; 571 struct sctp_inpcb *inp; 572 573 KASSERT(solocked(so)); 574 575 s = splsoftnet(); 576 inp = (struct sctp_inpcb *)so->so_pcb; 577 if (inp == 0) 578 return EINVAL; /* ??? possible? panic instead? */ 579 soisdisconnected(so); 580 sctp_inpcb_free(inp, 1); 581 splx(s); 582 return 0; 583 } 584 585 static int 586 sctp6_attach(struct socket *so, int proto) 587 { 588 struct in6pcb *inp6; 589 int error; 590 struct sctp_inpcb *inp; 591 592 sosetlock(so); 593 inp = (struct sctp_inpcb *)so->so_pcb; 594 if (inp != NULL) 595 return EINVAL; 596 597 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 598 error = soreserve(so, sctp_sendspace, sctp_recvspace); 599 if (error) 600 return error; 601 } 602 error = sctp_inpcb_alloc(so); 603 if (error) 604 return error; 605 inp = (struct sctp_inpcb *)so->so_pcb; 606 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */ 607 inp6 = (struct in6pcb *)inp; 608 609 inp->inp_vflag |= INP_IPV6; 610 if (ip6_v6only) { 611 inp6->in6p_flags |= IN6P_IPV6_V6ONLY; 612 } 613 so->so_send = sctp_sosend; 614 615 inp6->in6p_hops = -1; /* use kernel default */ 616 inp6->in6p_cksum = -1; /* just to be sure */ 617 #ifdef INET 618 /* 619 * XXX: ugly!! 620 * IPv4 TTL initialization is necessary for an IPv6 socket as well, 621 * because the socket may be bound to an IPv6 wildcard address, 622 * which may match an IPv4-mapped IPv6 address. 623 */ 624 inp->inp_ip_ttl = ip_defttl; 625 #endif 626 /* 627 * Hmm what about the IPSEC stuff that is missing here but 628 * in sctp_attach()? 629 */ 630 return 0; 631 } 632 633 static int 634 sctp6_bind(struct socket *so, struct sockaddr *nam, struct lwp *l) 635 { 636 struct sctp_inpcb *inp; 637 struct in6pcb *inp6; 638 int error; 639 640 KASSERT(solocked(so)); 641 642 inp = (struct sctp_inpcb *)so->so_pcb; 643 if (inp == 0) 644 return EINVAL; 645 646 inp6 = (struct in6pcb *)inp; 647 inp->inp_vflag &= ~INP_IPV4; 648 inp->inp_vflag |= INP_IPV6; 649 650 if (nam != NULL && (inp6->in6p_flags & IN6P_IPV6_V6ONLY) == 0) { 651 if (nam->sa_family == AF_INET) { 652 /* binding v4 addr to v6 socket, so reset flags */ 653 inp->inp_vflag |= INP_IPV4; 654 inp->inp_vflag &= ~INP_IPV6; 655 } else { 656 struct sockaddr_in6 *sin6_p; 657 sin6_p = (struct sockaddr_in6 *)nam; 658 659 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) { 660 inp->inp_vflag |= INP_IPV4; 661 } 662 else if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 663 struct sockaddr_in sin; 664 in6_sin6_2_sin(&sin, sin6_p); 665 inp->inp_vflag |= INP_IPV4; 666 inp->inp_vflag &= ~INP_IPV6; 667 error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, l); 668 return error; 669 } 670 } 671 } else if (nam != NULL) { 672 /* IPV6_V6ONLY socket */ 673 if (nam->sa_family == AF_INET) { 674 /* can't bind v4 addr to v6 only socket! */ 675 return EINVAL; 676 } else { 677 struct sockaddr_in6 *sin6_p; 678 sin6_p = (struct sockaddr_in6 *)nam; 679 680 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) 681 /* can't bind v4-mapped addrs either! */ 682 /* NOTE: we don't support SIIT */ 683 return EINVAL; 684 } 685 } 686 error = sctp_inpcb_bind(so, nam, l); 687 return error; 688 } 689 690 /*This could be made common with sctp_detach() since they are identical */ 691 static int 692 sctp6_detach(struct socket *so) 693 { 694 struct sctp_inpcb *inp; 695 696 inp = (struct sctp_inpcb *)so->so_pcb; 697 if (inp == 0) 698 return EINVAL; 699 700 if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) || 701 (so->so_rcv.sb_cc > 0)) 702 sctp_inpcb_free(inp, 1); 703 else 704 sctp_inpcb_free(inp, 0); 705 return 0; 706 } 707 708 static int 709 sctp6_disconnect(struct socket *so) 710 { 711 struct sctp_inpcb *inp; 712 713 inp = (struct sctp_inpcb *)so->so_pcb; 714 if (inp == NULL) { 715 return (ENOTCONN); 716 } 717 if (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { 718 if (LIST_EMPTY(&inp->sctp_asoc_list)) { 719 /* No connection */ 720 return (ENOTCONN); 721 } else { 722 int some_on_streamwheel = 0; 723 struct sctp_association *asoc; 724 struct sctp_tcb *stcb; 725 726 stcb = LIST_FIRST(&inp->sctp_asoc_list); 727 if (stcb == NULL) { 728 return (EINVAL); 729 } 730 asoc = &stcb->asoc; 731 if (!TAILQ_EMPTY(&asoc->out_wheel)) { 732 /* Check to see if some data queued */ 733 struct sctp_stream_out *outs; 734 TAILQ_FOREACH(outs, &asoc->out_wheel, 735 next_spoke) { 736 if (!TAILQ_EMPTY(&outs->outqueue)) { 737 some_on_streamwheel = 1; 738 break; 739 } 740 } 741 } 742 743 if (TAILQ_EMPTY(&asoc->send_queue) && 744 TAILQ_EMPTY(&asoc->sent_queue) && 745 (some_on_streamwheel == 0)) { 746 /* nothing queued to send, so I'm done... */ 747 if ((SCTP_GET_STATE(asoc) != 748 SCTP_STATE_SHUTDOWN_SENT) && 749 (SCTP_GET_STATE(asoc) != 750 SCTP_STATE_SHUTDOWN_ACK_SENT)) { 751 /* only send SHUTDOWN the first time */ 752 #ifdef SCTP_DEBUG 753 if (sctp_debug_on & SCTP_DEBUG_OUTPUT4) { 754 printf("%s:%d sends a shutdown\n", 755 __FILE__, 756 __LINE__ 757 ); 758 } 759 #endif 760 sctp_send_shutdown(stcb, stcb->asoc.primary_destination); 761 sctp_chunk_output(stcb->sctp_ep, stcb, 1); 762 asoc->state = SCTP_STATE_SHUTDOWN_SENT; 763 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, 764 stcb->sctp_ep, stcb, 765 asoc->primary_destination); 766 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, 767 stcb->sctp_ep, stcb, 768 asoc->primary_destination); 769 } 770 } else { 771 /* 772 * we still got (or just got) data to send, 773 * so set SHUTDOWN_PENDING 774 */ 775 /* 776 * XXX sockets draft says that MSG_EOF should 777 * be sent with no data. currently, we will 778 * allow user data to be sent first and move 779 * to SHUTDOWN-PENDING 780 */ 781 asoc->state |= SCTP_STATE_SHUTDOWN_PENDING; 782 } 783 return (0); 784 } 785 } else { 786 /* UDP model does not support this */ 787 return EOPNOTSUPP; 788 } 789 } 790 791 static int 792 sctp6_recvoob(struct socket *so, struct mbuf *m, int flags) 793 { 794 KASSERT(solocked(so)); 795 796 return EOPNOTSUPP; 797 } 798 799 static int 800 sctp6_send(struct socket *so, struct mbuf *m, struct sockaddr *nam, 801 struct mbuf *control, struct lwp *l) 802 { 803 struct sctp_inpcb *inp; 804 struct in6pcb *inp6; 805 #ifdef INET 806 struct sockaddr_in6 *sin6; 807 #endif /* INET */ 808 /* No SPL needed since sctp_output does this */ 809 810 inp = (struct sctp_inpcb *)so->so_pcb; 811 if (inp == NULL) { 812 if (control) { 813 m_freem(control); 814 control = NULL; 815 } 816 m_freem(m); 817 return EINVAL; 818 } 819 inp6 = (struct in6pcb *)inp; 820 /* For the TCP model we may get a NULL addr, if we 821 * are a connected socket thats ok. 822 */ 823 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) && 824 (nam == NULL)) { 825 goto connected_type; 826 } 827 if (nam == NULL) { 828 m_freem(m); 829 if (control) { 830 m_freem(control); 831 control = NULL; 832 } 833 return (EDESTADDRREQ); 834 } 835 836 #ifdef INET 837 sin6 = (struct sockaddr_in6 *)nam; 838 if (inp6->in6p_flags & IN6P_IPV6_V6ONLY) { 839 /* 840 * if IPV6_V6ONLY flag, we discard datagrams 841 * destined to a v4 addr or v4-mapped addr 842 */ 843 if (nam->sa_family == AF_INET) { 844 return EINVAL; 845 } 846 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 847 return EINVAL; 848 } 849 } 850 851 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 852 if (!ip6_v6only) { 853 struct sockaddr_in sin; 854 /* convert v4-mapped into v4 addr and send */ 855 in6_sin6_2_sin(&sin, sin6); 856 return sctp_send(so, m, (struct sockaddr *)&sin, 857 control, l); 858 } else { 859 /* mapped addresses aren't enabled */ 860 return EINVAL; 861 } 862 } 863 #endif /* INET */ 864 connected_type: 865 /* now what about control */ 866 if (control) { 867 if (inp->control) { 868 printf("huh? control set?\n"); 869 m_freem(inp->control); 870 inp->control = NULL; 871 } 872 inp->control = control; 873 } 874 /* add it in possibly */ 875 if ((inp->pkt) && 876 (inp->pkt->m_flags & M_PKTHDR)) { 877 struct mbuf *x; 878 int c_len; 879 880 c_len = 0; 881 /* How big is it */ 882 for (x=m;x;x = x->m_next) { 883 c_len += x->m_len; 884 } 885 inp->pkt->m_pkthdr.len += c_len; 886 } 887 /* Place the data */ 888 if (inp->pkt) { 889 inp->pkt_last->m_next = m; 890 inp->pkt_last = m; 891 } else { 892 inp->pkt_last = inp->pkt = m; 893 } 894 if ((so->so_state & SS_MORETOCOME) == 0) { 895 /* 896 * note with the current version this code will only be 897 * used by OpenBSD, NetBSD and FreeBSD have methods for 898 * re-defining sosend() to use sctp_sosend(). One can 899 * optionaly switch back to this code (by changing back 900 * the defininitions but this is not advisable. 901 */ 902 int ret; 903 ret = sctp_output(inp, inp->pkt , nam, inp->control, l, 0); 904 inp->pkt = NULL; 905 inp->control = NULL; 906 return (ret); 907 } else { 908 return (0); 909 } 910 } 911 912 static int 913 sctp6_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) 914 { 915 KASSERT(solocked(so)); 916 917 if (m) 918 m_freem(m); 919 if (control) 920 m_freem(control); 921 922 return EOPNOTSUPP; 923 } 924 925 static int 926 sctp6_connect(struct socket *so, struct sockaddr *nam, struct lwp *l) 927 { 928 int error = 0; 929 struct sctp_inpcb *inp; 930 struct in6pcb *inp6; 931 struct sctp_tcb *stcb; 932 #ifdef INET 933 struct sockaddr_in6 *sin6; 934 struct sockaddr_storage ss; 935 #endif /* INET */ 936 937 inp6 = (struct in6pcb *)so->so_pcb; 938 inp = (struct sctp_inpcb *)so->so_pcb; 939 if (inp == 0) { 940 return (ECONNRESET); /* I made the same as TCP since 941 * we are not setup? */ 942 } 943 SCTP_ASOC_CREATE_LOCK(inp); 944 SCTP_INP_RLOCK(inp); 945 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 946 SCTP_PCB_FLAGS_UNBOUND) { 947 /* Bind a ephemeral port */ 948 SCTP_INP_RUNLOCK(inp); 949 error = sctp6_bind(so, NULL, l); 950 if (error) { 951 SCTP_ASOC_CREATE_UNLOCK(inp); 952 953 return (error); 954 } 955 SCTP_INP_RLOCK(inp); 956 } 957 958 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 959 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { 960 /* We are already connected AND the TCP model */ 961 SCTP_INP_RUNLOCK(inp); 962 SCTP_ASOC_CREATE_UNLOCK(inp); 963 return (EADDRINUSE); 964 } 965 966 #ifdef INET 967 sin6 = (struct sockaddr_in6 *)nam; 968 if (inp6->in6p_flags & IN6P_IPV6_V6ONLY) { 969 /* 970 * if IPV6_V6ONLY flag, ignore connections 971 * destined to a v4 addr or v4-mapped addr 972 */ 973 if (nam->sa_family == AF_INET) { 974 SCTP_INP_RUNLOCK(inp); 975 SCTP_ASOC_CREATE_UNLOCK(inp); 976 return EINVAL; 977 } 978 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 979 SCTP_INP_RUNLOCK(inp); 980 SCTP_ASOC_CREATE_UNLOCK(inp); 981 return EINVAL; 982 } 983 } 984 985 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 986 if (!ip6_v6only) { 987 /* convert v4-mapped into v4 addr */ 988 in6_sin6_2_sin((struct sockaddr_in *)&ss, sin6); 989 nam = (struct sockaddr *)&ss; 990 } else { 991 /* mapped addresses aren't enabled */ 992 SCTP_INP_RUNLOCK(inp); 993 SCTP_ASOC_CREATE_UNLOCK(inp); 994 return EINVAL; 995 } 996 } 997 #endif /* INET */ 998 999 /* Now do we connect? */ 1000 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 1001 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1002 if (stcb) { 1003 SCTP_TCB_UNLOCK (stcb); 1004 } 1005 SCTP_INP_RUNLOCK(inp); 1006 } else { 1007 SCTP_INP_RUNLOCK(inp); 1008 SCTP_INP_WLOCK(inp); 1009 SCTP_INP_INCR_REF(inp); 1010 SCTP_INP_WUNLOCK(inp); 1011 stcb = sctp_findassociation_ep_addr(&inp, nam, NULL, NULL, NULL); 1012 if (stcb == NULL) { 1013 SCTP_INP_WLOCK(inp); 1014 SCTP_INP_DECR_REF(inp); 1015 SCTP_INP_WUNLOCK(inp); 1016 } 1017 } 1018 1019 if (stcb != NULL) { 1020 /* Already have or am bring up an association */ 1021 SCTP_ASOC_CREATE_UNLOCK(inp); 1022 SCTP_TCB_UNLOCK (stcb); 1023 return (EALREADY); 1024 } 1025 /* We are GOOD to go */ 1026 stcb = sctp_aloc_assoc(inp, nam, 1, &error, 0); 1027 SCTP_ASOC_CREATE_UNLOCK(inp); 1028 if (stcb == NULL) { 1029 /* Gak! no memory */ 1030 return (error); 1031 } 1032 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { 1033 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; 1034 /* Set the connected flag so we can queue data */ 1035 soisconnecting(so); 1036 } 1037 stcb->asoc.state = SCTP_STATE_COOKIE_WAIT; 1038 SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); 1039 sctp_send_initiate(inp, stcb); 1040 SCTP_TCB_UNLOCK (stcb); 1041 return error; 1042 } 1043 1044 static int 1045 sctp6_connect2(struct socket *so, struct socket *so2) 1046 { 1047 KASSERT(solocked(so)); 1048 1049 return EOPNOTSUPP; 1050 } 1051 1052 static int 1053 sctp6_getaddr(struct socket *so, struct sockaddr *nam) 1054 { 1055 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam; 1056 struct sctp_inpcb *inp; 1057 int error; 1058 1059 /* 1060 * Do the malloc first in case it blocks. 1061 */ 1062 memset(sin6, 0, sizeof(*sin6)); 1063 sin6->sin6_family = AF_INET6; 1064 sin6->sin6_len = sizeof(*sin6); 1065 1066 inp = (struct sctp_inpcb *)so->so_pcb; 1067 if (inp == NULL) { 1068 return ECONNRESET; 1069 } 1070 1071 sin6->sin6_port = inp->sctp_lport; 1072 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 1073 /* For the bound all case you get back 0 */ 1074 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 1075 struct sctp_tcb *stcb; 1076 const struct sockaddr_in6 *sin_a6; 1077 struct sctp_nets *net; 1078 int fnd; 1079 1080 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1081 if (stcb == NULL) { 1082 goto notConn6; 1083 } 1084 fnd = 0; 1085 sin_a6 = NULL; 1086 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1087 sin_a6 = (const struct sockaddr_in6 *)rtcache_getdst(&net->ro); 1088 if (sin_a6->sin6_family == AF_INET6) { 1089 fnd = 1; 1090 break; 1091 } 1092 } 1093 if ((!fnd) || (sin_a6 == NULL)) { 1094 /* punt */ 1095 goto notConn6; 1096 } 1097 sin6->sin6_addr = sctp_ipv6_source_address_selection( 1098 inp, stcb, &net->ro, net, 0); 1099 1100 } else { 1101 /* For the bound all case you get back 0 */ 1102 notConn6: 1103 memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr)); 1104 } 1105 } else { 1106 /* Take the first IPv6 address in the list */ 1107 struct sctp_laddr *laddr; 1108 int fnd = 0; 1109 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 1110 if (laddr->ifa->ifa_addr->sa_family == AF_INET6) { 1111 struct sockaddr_in6 *sin_a; 1112 sin_a = (struct sockaddr_in6 *)laddr->ifa->ifa_addr; 1113 sin6->sin6_addr = sin_a->sin6_addr; 1114 fnd = 1; 1115 break; 1116 } 1117 } 1118 if (!fnd) { 1119 return ENOENT; 1120 } 1121 } 1122 /* Scoping things for v6 */ 1123 if ((error = sa6_recoverscope(sin6)) != 0) 1124 return (error); 1125 1126 return (0); 1127 } 1128 1129 static int 1130 sctp6_peeraddr(struct socket *so, struct sockaddr *nam) 1131 { 1132 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam; 1133 int fnd, error; 1134 const struct sockaddr_in6 *sin_a6; 1135 struct sctp_inpcb *inp; 1136 struct sctp_tcb *stcb; 1137 struct sctp_nets *net; 1138 /* 1139 * Do the malloc first in case it blocks. 1140 */ 1141 inp = (struct sctp_inpcb *)so->so_pcb; 1142 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) { 1143 /* UDP type and listeners will drop out here */ 1144 return (ENOTCONN); 1145 } 1146 memset(sin6, 0, sizeof(*sin6)); 1147 sin6->sin6_family = AF_INET6; 1148 sin6->sin6_len = sizeof(*sin6); 1149 1150 /* We must recapture incase we blocked */ 1151 inp = (struct sctp_inpcb *)so->so_pcb; 1152 if (inp == NULL) { 1153 return ECONNRESET; 1154 } 1155 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1156 if (stcb == NULL) { 1157 return ECONNRESET; 1158 } 1159 fnd = 0; 1160 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1161 sin_a6 = (const struct sockaddr_in6 *)rtcache_getdst(&net->ro); 1162 if (sin_a6->sin6_family == AF_INET6) { 1163 fnd = 1; 1164 sin6->sin6_port = stcb->rport; 1165 sin6->sin6_addr = sin_a6->sin6_addr; 1166 break; 1167 } 1168 } 1169 if (!fnd) { 1170 /* No IPv4 address */ 1171 return ENOENT; 1172 } 1173 if ((error = sa6_recoverscope(sin6)) != 0) 1174 return (error); 1175 1176 return (0); 1177 } 1178 1179 static int 1180 sctp6_sockaddr(struct socket *so, struct sockaddr *nam) 1181 { 1182 struct in6pcb *inp6 = sotoin6pcb(so); 1183 int error; 1184 1185 if (inp6 == NULL) 1186 return EINVAL; 1187 1188 /* allow v6 addresses precedence */ 1189 error = sctp6_getaddr(so, nam); 1190 if (error) { 1191 /* try v4 next if v6 failed */ 1192 error = sctp_sockaddr(so, nam); 1193 if (error) { 1194 return (error); 1195 } 1196 1197 /* if I'm V6ONLY, convert it to v4-mapped */ 1198 if (inp6->in6p_flags & IN6P_IPV6_V6ONLY) { 1199 struct sockaddr_in6 sin6; 1200 in6_sin_2_v4mapsin6((struct sockaddr_in *)nam, &sin6); 1201 memcpy(nam, &sin6, sizeof(struct sockaddr_in6)); 1202 } 1203 } 1204 return (error); 1205 } 1206 1207 #if 0 1208 static int 1209 sctp6_getpeeraddr(struct socket *so, struct sockaddr *nam) 1210 { 1211 struct in6pcb *inp6 = sotoin6pcb(so); 1212 int error; 1213 1214 if (inp6 == NULL) 1215 return EINVAL; 1216 1217 /* allow v6 addresses precedence */ 1218 error = sctp6_peeraddr(so, nam); 1219 if (error) { 1220 /* try v4 next if v6 failed */ 1221 error = sctp_peeraddr(so, nam); 1222 if (error) { 1223 return (error); 1224 } 1225 /* if I'm V6ONLY, convert it to v4-mapped */ 1226 if ((inp6->in6p_flags & IN6P_IPV6_V6ONLY)) { 1227 struct sockaddr_in6 sin6; 1228 in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6); 1229 memcpy(addr, &sin6, sizeof(struct sockaddr_in6)); 1230 } 1231 } 1232 return error; 1233 } 1234 #endif 1235 1236 static int 1237 sctp6_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp) 1238 { 1239 int error = 0; 1240 int family; 1241 1242 family = so->so_proto->pr_domain->dom_family; 1243 switch (family) { 1244 #ifdef INET 1245 case PF_INET: 1246 error = in_control(so, cmd, nam, ifp); 1247 break; 1248 #endif 1249 #ifdef INET6 1250 case PF_INET6: 1251 error = in6_control(so, cmd, nam, ifp); 1252 break; 1253 #endif 1254 default: 1255 error = EAFNOSUPPORT; 1256 } 1257 return (error); 1258 } 1259 1260 static int 1261 sctp6_accept(struct socket *so, struct sockaddr *nam) 1262 { 1263 KASSERT(solocked(so)); 1264 1265 return EOPNOTSUPP; 1266 } 1267 1268 static int 1269 sctp6_stat(struct socket *so, struct stat *ub) 1270 { 1271 return 0; 1272 } 1273 1274 static int 1275 sctp6_listen(struct socket *so, struct lwp *l) 1276 { 1277 return sctp_listen(so, l); 1278 } 1279 1280 static int 1281 sctp6_shutdown(struct socket *so) 1282 { 1283 return sctp_shutdown(so); 1284 } 1285 1286 static int 1287 sctp6_rcvd(struct socket *so, int flags, struct lwp *l) 1288 { 1289 KASSERT(solocked(so)); 1290 1291 return sctp_rcvd(so, flags, l); 1292 } 1293 1294 static int 1295 sctp6_purgeif(struct socket *so, struct ifnet *ifp) 1296 { 1297 struct ifaddr *ifa; 1298 IFADDR_FOREACH(ifa, ifp) { 1299 if (ifa->ifa_addr->sa_family == PF_INET6) { 1300 sctp_delete_ip_address(ifa); 1301 } 1302 } 1303 1304 mutex_enter(softnet_lock); 1305 in6_purgeif(ifp); 1306 mutex_exit(softnet_lock); 1307 1308 return 0; 1309 } 1310 1311 PR_WRAP_USRREQS(sctp6) 1312 #define sctp6_attach sctp6_attach_wrapper 1313 #define sctp6_detach sctp6_detach_wrapper 1314 #define sctp6_accept sctp6_accept_wrapper 1315 #define sctp6_bind sctp6_bind_wrapper 1316 #define sctp6_listen sctp6_listen_wrapper 1317 #define sctp6_connect sctp6_connect_wrapper 1318 #define sctp6_connect2 sctp6_connect2_wrapper 1319 #define sctp6_disconnect sctp6_disconnect_wrapper 1320 #define sctp6_shutdown sctp6_shutdown_wrapper 1321 #define sctp6_abort sctp6_abort_wrapper 1322 #define sctp6_ioctl sctp6_ioctl_wrapper 1323 #define sctp6_stat sctp6_stat_wrapper 1324 #define sctp6_peeraddr sctp6_peeraddr_wrapper 1325 #define sctp6_sockaddr sctp6_sockaddr_wrapper 1326 #define sctp6_rcvd sctp6_rcvd_wrapper 1327 #define sctp6_recvoob sctp6_recvoob_wrapper 1328 #define sctp6_send sctp6_send_wrapper 1329 #define sctp6_sendoob sctp6_sendoob_wrapper 1330 #define sctp6_purgeif sctp6_purgeif_wrapper 1331 1332 const struct pr_usrreqs sctp6_usrreqs = { 1333 .pr_attach = sctp6_attach, 1334 .pr_detach = sctp6_detach, 1335 .pr_accept = sctp6_accept, 1336 .pr_bind = sctp6_bind, 1337 .pr_listen = sctp6_listen, 1338 .pr_connect = sctp6_connect, 1339 .pr_connect2 = sctp6_connect2, 1340 .pr_disconnect = sctp6_disconnect, 1341 .pr_shutdown = sctp6_shutdown, 1342 .pr_abort = sctp6_abort, 1343 .pr_ioctl = sctp6_ioctl, 1344 .pr_stat = sctp6_stat, 1345 .pr_peeraddr = sctp6_peeraddr, 1346 .pr_sockaddr = sctp6_sockaddr, 1347 .pr_rcvd = sctp6_rcvd, 1348 .pr_recvoob = sctp6_recvoob, 1349 .pr_send = sctp6_send, 1350 .pr_sendoob = sctp6_sendoob, 1351 .pr_purgeif = sctp6_purgeif, 1352 }; 1353