1 /* $KAME: sctp6_usrreq.c,v 1.38 2005/08/24 08:08:56 suz Exp $ */ 2 /* $NetBSD: sctp6_usrreq.c,v 1.1 2015/10/13 21:28:35 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 1.1 2015/10/13 21:28:35 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 #ifndef __OpenBSD__ 85 #include <netinet6/ipsec.h> 86 #else 87 #undef IPSEC 88 #endif 89 #endif /*IPSEC*/ 90 91 #if defined(NFAITH) && NFAITH > 0 92 #include <net/if_faith.h> 93 #endif 94 95 #include <net/net_osdep.h> 96 97 extern struct protosw inetsw[]; 98 99 #if defined(HAVE_NRL_INPCB) || defined(__FreeBSD__) 100 #ifndef in6pcb 101 #define in6pcb inpcb 102 #endif 103 #ifndef sotoin6pcb 104 #define sotoin6pcb sotoinpcb 105 #endif 106 #endif 107 108 #ifdef SCTP_DEBUG 109 extern u_int32_t sctp_debug_on; 110 #endif 111 112 static int sctp6_detach(struct socket *so); 113 114 extern int sctp_no_csum_on_loopback; 115 116 int 117 sctp6_input(struct mbuf **mp, int *offp, int proto) 118 { 119 struct mbuf *m = *mp; 120 struct ip6_hdr *ip6; 121 struct sctphdr *sh; 122 struct sctp_inpcb *in6p = NULL; 123 struct sctp_nets *net; 124 int refcount_up = 0; 125 u_int32_t check, calc_check; 126 struct inpcb *in6p_ip; 127 struct sctp_chunkhdr *ch; 128 struct mbuf *opts = NULL; 129 int length, mlen, offset, iphlen; 130 u_int8_t ecn_bits; 131 struct sctp_tcb *stcb = NULL; 132 int off = *offp; 133 int s; 134 135 ip6 = mtod(m, struct ip6_hdr *); 136 /* Ensure that (sctphdr + sctp_chunkhdr) in a row. */ 137 IP6_EXTHDR_GET(sh, struct sctphdr *, m, off, sizeof(*sh) + sizeof(*ch)); 138 if (sh == NULL) { 139 sctp_pegs[SCTP_HDR_DROPS]++; 140 return IPPROTO_DONE; 141 } 142 ch = (struct sctp_chunkhdr *)((vaddr_t)sh + sizeof(struct sctphdr)); 143 144 iphlen = off; 145 offset = iphlen + sizeof(*sh) + sizeof(*ch); 146 147 #if defined(NFAITH) && NFAITH > 0 148 if (faithprefix(&ip6->ip6_dst)) 149 goto bad; 150 #endif /* NFAITH defined and > 0 */ 151 sctp_pegs[SCTP_INPKTS]++; 152 #ifdef SCTP_DEBUG 153 if (sctp_debug_on & SCTP_DEBUG_INPUT1) { 154 printf("V6 input gets a packet iphlen:%d pktlen:%d\n", iphlen, m->m_pkthdr.len); 155 } 156 #endif 157 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) { 158 /* No multi-cast support in SCTP */ 159 sctp_pegs[SCTP_IN_MCAST]++; 160 goto bad; 161 } 162 /* destination port of 0 is illegal, based on RFC2960. */ 163 if (sh->dest_port == 0) 164 goto bad; 165 if ((sctp_no_csum_on_loopback == 0) || 166 (m->m_pkthdr.rcvif == NULL) || 167 (m->m_pkthdr.rcvif->if_type != IFT_LOOP)) { 168 /* we do NOT validate things from the loopback if the 169 * sysctl is set to 1. 170 */ 171 check = sh->checksum; /* save incoming checksum */ 172 if ((check == 0) && (sctp_no_csum_on_loopback)) { 173 /* special hook for where we got a local address 174 * somehow routed across a non IFT_LOOP type interface 175 */ 176 if (IN6_ARE_ADDR_EQUAL(&ip6->ip6_src, &ip6->ip6_dst)) 177 goto sctp_skip_csum; 178 } 179 sh->checksum = 0; /* prepare for calc */ 180 calc_check = sctp_calculate_sum(m, &mlen, iphlen); 181 if (calc_check != check) { 182 #ifdef SCTP_DEBUG 183 if (sctp_debug_on & SCTP_DEBUG_INPUT1) { 184 printf("Bad CSUM on SCTP packet calc_check:%x check:%x m:%p mlen:%d iphlen:%d\n", 185 calc_check, check, m, 186 mlen, iphlen); 187 } 188 #endif 189 stcb = sctp_findassociation_addr(m, iphlen, offset - sizeof(*ch), 190 sh, ch, &in6p, &net); 191 /* in6p's ref-count increased && stcb locked */ 192 if ((in6p) && (stcb)) { 193 sctp_send_packet_dropped(stcb, net, m, iphlen, 1); 194 sctp_chunk_output((struct sctp_inpcb *)in6p, stcb, 2); 195 } else if ((in6p != NULL) && (stcb == NULL)) { 196 refcount_up = 1; 197 } 198 sctp_pegs[SCTP_BAD_CSUM]++; 199 goto bad; 200 } 201 sh->checksum = calc_check; 202 } else { 203 sctp_skip_csum: 204 mlen = m->m_pkthdr.len; 205 } 206 net = NULL; 207 /* 208 * Locate pcb and tcb for datagram 209 * sctp_findassociation_addr() wants IP/SCTP/first chunk header... 210 */ 211 #ifdef SCTP_DEBUG 212 if (sctp_debug_on & SCTP_DEBUG_INPUT1) { 213 printf("V6 Find the association\n"); 214 } 215 #endif 216 stcb = sctp_findassociation_addr(m, iphlen, offset - sizeof(*ch), 217 sh, ch, &in6p, &net); 218 /* in6p's ref-count increased */ 219 if (in6p == NULL) { 220 struct sctp_init_chunk *init_chk, chunk_buf; 221 222 sctp_pegs[SCTP_NOPORTS]++; 223 if (ch->chunk_type == SCTP_INITIATION) { 224 /* we do a trick here to get the INIT tag, 225 * dig in and get the tag from the INIT and 226 * put it in the common header. 227 */ 228 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m, 229 iphlen + sizeof(*sh), sizeof(*init_chk), 230 (u_int8_t *)&chunk_buf); 231 sh->v_tag = init_chk->init.initiate_tag; 232 } 233 sctp_send_abort(m, iphlen, sh, 0, NULL); 234 goto bad; 235 } else if (stcb == NULL) { 236 refcount_up = 1; 237 } 238 in6p_ip = (struct inpcb *)in6p; 239 #ifdef IPSEC 240 /* 241 * Check AH/ESP integrity. 242 */ 243 if (ipsec6_in_reject_so(m, in6p->sctp_socket)) { 244 /* XXX */ 245 #ifndef __APPLE__ 246 /* FIX ME: need to find right stat for __APPLE__ */ 247 ipsec6stat.in_polvio++; 248 #endif 249 goto bad; 250 } 251 #endif /*IPSEC*/ 252 253 /* 254 * Construct sockaddr format source address. 255 * Stuff source address and datagram in user buffer. 256 */ 257 if ((in6p->ip_inp.inp.inp_flags & INP_CONTROLOPTS) 258 #ifndef __OpenBSD__ 259 || (in6p->sctp_socket->so_options & SO_TIMESTAMP) 260 #endif 261 ) { 262 #if defined(__FreeBSD__) || defined(__APPLE__) 263 #if (defined(SCTP_BASE_FREEBSD) && __FreeBSD_version < 501113) || defined(__APPLE__) 264 ip6_savecontrol(in6p_ip, &opts, ip6, m); 265 #elif __FreeBSD_version >= 440000 || (defined(SCTP_BASE_FREEBSD) && __FreeBSD_version >= 501113) 266 ip6_savecontrol(in6p_ip, m, &opts); 267 #else 268 ip6_savecontrol(in6p_ip, m, &opts, NULL); 269 #endif 270 #elif defined(__NetBSD__) 271 ip6_savecontrol((struct in6pcb *)in6p_ip, &opts, ip6, m); 272 #else 273 ip6_savecontrol((struct in6pcb *)in6p_ip, m, &opts); 274 #endif 275 } 276 277 /* 278 * CONTROL chunk processing 279 */ 280 length = ntohs(ip6->ip6_plen) + iphlen; 281 offset -= sizeof(*ch); 282 ecn_bits = ((ntohl(ip6->ip6_flow) >> 20) & 0x000000ff); 283 s = splsoftnet(); 284 (void)sctp_common_input_processing(&m, iphlen, offset, length, sh, ch, 285 in6p, stcb, net, ecn_bits); 286 /* inp's ref-count reduced && stcb unlocked */ 287 splx(s); 288 /* XXX this stuff below gets moved to appropriate parts later... */ 289 if (m) 290 m_freem(m); 291 if (opts) 292 m_freem(opts); 293 294 if ((in6p) && refcount_up){ 295 /* reduce ref-count */ 296 SCTP_INP_WLOCK(in6p); 297 SCTP_INP_DECR_REF(in6p); 298 SCTP_INP_WUNLOCK(in6p); 299 } 300 301 return IPPROTO_DONE; 302 303 bad: 304 if (stcb) { 305 SCTP_TCB_UNLOCK(stcb); 306 } 307 308 if ((in6p) && refcount_up){ 309 /* reduce ref-count */ 310 SCTP_INP_WLOCK(in6p); 311 SCTP_INP_DECR_REF(in6p); 312 SCTP_INP_WUNLOCK(in6p); 313 } 314 if (m) { 315 m_freem(m); 316 } 317 if (opts) { 318 m_freem(opts); 319 } 320 return IPPROTO_DONE; 321 } 322 323 324 static void 325 sctp6_notify_mbuf(struct sctp_inpcb *inp, 326 struct icmp6_hdr *icmp6, 327 struct sctphdr *sh, 328 struct sctp_tcb *stcb, 329 struct sctp_nets *net) 330 { 331 unsigned int nxtsz; 332 333 if ((inp == NULL) || (stcb == NULL) || (net == NULL) || 334 (icmp6 == NULL) || (sh == NULL)) { 335 goto out; 336 } 337 338 /* First do we even look at it? */ 339 if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) 340 goto out; 341 342 if (icmp6->icmp6_type != ICMP6_PACKET_TOO_BIG) { 343 /* not PACKET TO BIG */ 344 goto out; 345 } 346 /* 347 * ok we need to look closely. We could even get smarter and 348 * look at anyone that we sent to in case we get a different 349 * ICMP that tells us there is no way to reach a host, but for 350 * this impl, all we care about is MTU discovery. 351 */ 352 nxtsz = ntohl(icmp6->icmp6_mtu); 353 /* Stop any PMTU timer */ 354 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL); 355 356 /* Adjust destination size limit */ 357 if (net->mtu > nxtsz) { 358 net->mtu = nxtsz; 359 } 360 /* now what about the ep? */ 361 if (stcb->asoc.smallest_mtu > nxtsz) { 362 struct sctp_tmit_chunk *chk; 363 struct sctp_stream_out *strm; 364 /* Adjust that too */ 365 stcb->asoc.smallest_mtu = nxtsz; 366 /* now off to subtract IP_DF flag if needed */ 367 368 TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) { 369 if ((chk->send_size+IP_HDR_SIZE) > nxtsz) { 370 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 371 } 372 } 373 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { 374 if ((chk->send_size+IP_HDR_SIZE) > nxtsz) { 375 /* 376 * For this guy we also mark for immediate 377 * resend since we sent to big of chunk 378 */ 379 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 380 if (chk->sent != SCTP_DATAGRAM_RESEND) 381 stcb->asoc.sent_queue_retran_cnt++; 382 chk->sent = SCTP_DATAGRAM_RESEND; 383 chk->rec.data.doing_fast_retransmit = 0; 384 385 chk->sent = SCTP_DATAGRAM_RESEND; 386 /* Clear any time so NO RTT is being done */ 387 chk->sent_rcv_time.tv_sec = 0; 388 chk->sent_rcv_time.tv_usec = 0; 389 stcb->asoc.total_flight -= chk->send_size; 390 net->flight_size -= chk->send_size; 391 } 392 } 393 TAILQ_FOREACH(strm, &stcb->asoc.out_wheel, next_spoke) { 394 TAILQ_FOREACH(chk, &strm->outqueue, sctp_next) { 395 if ((chk->send_size+IP_HDR_SIZE) > nxtsz) { 396 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 397 } 398 } 399 } 400 } 401 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL); 402 out: 403 if (inp) { 404 /* reduce inp's ref-count */ 405 SCTP_INP_WLOCK(inp); 406 SCTP_INP_DECR_REF(inp); 407 SCTP_INP_WUNLOCK(inp); 408 } 409 if (stcb) { 410 SCTP_TCB_UNLOCK(stcb); 411 } 412 } 413 414 415 void * 416 sctp6_ctlinput(int cmd, const struct sockaddr *pktdst, void *d) 417 { 418 struct sctphdr sh; 419 struct ip6ctlparam *ip6cp = NULL; 420 int s, cm; 421 422 if (pktdst->sa_family != AF_INET6 || 423 pktdst->sa_len != sizeof(struct sockaddr_in6)) 424 return NULL; 425 426 if ((unsigned)cmd >= PRC_NCMDS) 427 return NULL; 428 if (PRC_IS_REDIRECT(cmd)) { 429 d = NULL; 430 } else if (inet6ctlerrmap[cmd] == 0) { 431 return NULL; 432 } 433 434 /* if the parameter is from icmp6, decode it. */ 435 if (d != NULL) { 436 ip6cp = (struct ip6ctlparam *)d; 437 } else { 438 ip6cp = (struct ip6ctlparam *)NULL; 439 } 440 441 if (ip6cp) { 442 /* 443 * XXX: We assume that when IPV6 is non NULL, 444 * M and OFF are valid. 445 */ 446 /* check if we can safely examine src and dst ports */ 447 struct sctp_inpcb *inp; 448 struct sctp_tcb *stcb; 449 struct sctp_nets *net; 450 struct sockaddr_in6 final; 451 452 if (ip6cp->ip6c_m == NULL || 453 (size_t)ip6cp->ip6c_m->m_pkthdr.len < (ip6cp->ip6c_off + sizeof(sh))) 454 return NULL; 455 456 memset(&sh, 0, sizeof(sh)); 457 memset(&final, 0, sizeof(final)); 458 inp = NULL; 459 net = NULL; 460 m_copydata(ip6cp->ip6c_m, ip6cp->ip6c_off, sizeof(sh), 461 (void *)&sh); 462 ip6cp->ip6c_src->sin6_port = sh.src_port; 463 final.sin6_len = sizeof(final); 464 final.sin6_family = AF_INET6; 465 final.sin6_addr = ((const struct sockaddr_in6 *)pktdst)->sin6_addr; 466 final.sin6_port = sh.dest_port; 467 s = splsoftnet(); 468 stcb = sctp_findassociation_addr_sa((struct sockaddr *)ip6cp->ip6c_src, 469 (struct sockaddr *)&final, 470 &inp, &net, 1); 471 /* inp's ref-count increased && stcb locked */ 472 if (stcb != NULL && inp && (inp->sctp_socket != NULL)) { 473 if (cmd == PRC_MSGSIZE) { 474 sctp6_notify_mbuf(inp, 475 ip6cp->ip6c_icmp6, 476 &sh, 477 stcb, 478 net); 479 /* inp's ref-count reduced && stcb unlocked */ 480 } else { 481 if (cmd == PRC_HOSTDEAD) { 482 cm = EHOSTUNREACH; 483 } else { 484 cm = inet6ctlerrmap[cmd]; 485 } 486 sctp_notify(inp, cm, &sh, 487 (struct sockaddr *)&final, 488 stcb, net); 489 /* inp's ref-count reduced && stcb unlocked */ 490 } 491 } else { 492 if (PRC_IS_REDIRECT(cmd) && inp) { 493 in6_rtchange((struct in6pcb *)inp, 494 inet6ctlerrmap[cmd]); 495 } 496 if (inp) { 497 /* reduce inp's ref-count */ 498 SCTP_INP_WLOCK(inp); 499 SCTP_INP_DECR_REF(inp); 500 SCTP_INP_WUNLOCK(inp); 501 } 502 if (stcb) { 503 SCTP_TCB_UNLOCK(stcb); 504 } 505 } 506 splx(s); 507 } 508 return NULL; 509 } 510 511 /* 512 * this routine can probably be collasped into the one in sctp_userreq.c 513 * since they do the same thing and now we lookup with a sockaddr 514 */ 515 #ifdef __FreeBSD__ 516 static int 517 sctp6_getcred(SYSCTL_HANDLER_ARGS) 518 { 519 struct sockaddr_in6 addrs[2]; 520 struct sctp_inpcb *inp; 521 struct sctp_nets *net; 522 struct sctp_tcb *stcb; 523 int error, s; 524 525 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000 526 error = suser(req->td); 527 #else 528 error = suser(req->p); 529 #endif 530 if (error) 531 return (error); 532 533 if (req->newlen != sizeof(addrs)) 534 return (EINVAL); 535 if (req->oldlen != sizeof(struct ucred)) 536 return (EINVAL); 537 error = SYSCTL_IN(req, addrs, sizeof(addrs)); 538 if (error) 539 return (error); 540 s = splsoftnet(); 541 542 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[0]), 543 sin6tosa(&addrs[1]), 544 &inp, &net, 1); 545 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) { 546 error = ENOENT; 547 if (inp) { 548 SCTP_INP_WLOCK(inp); 549 SCTP_INP_DECR_REF(inp); 550 SCTP_INP_WUNLOCK(inp); 551 } 552 goto out; 553 } 554 error = SYSCTL_OUT(req, inp->sctp_socket->so_cred, 555 sizeof(struct ucred)); 556 557 SCTP_TCB_UNLOCK (stcb); 558 out: 559 splx(s); 560 return (error); 561 } 562 563 SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE|CTLFLAG_RW, 564 0, 0, 565 sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection"); 566 567 #endif 568 569 /* This is the same as the sctp_abort() could be made common */ 570 static int 571 sctp6_abort(struct socket *so) 572 { 573 int s; 574 struct sctp_inpcb *inp; 575 576 KASSERT(solocked(so)); 577 578 s = splsoftnet(); 579 inp = (struct sctp_inpcb *)so->so_pcb; 580 if (inp == 0) 581 return EINVAL; /* ??? possible? panic instead? */ 582 soisdisconnected(so); 583 sctp_inpcb_free(inp, 1); 584 splx(s); 585 return 0; 586 } 587 588 static int 589 sctp6_attach(struct socket *so, int proto) 590 { 591 struct in6pcb *inp6; 592 int error; 593 struct sctp_inpcb *inp; 594 595 sosetlock(so); 596 inp = (struct sctp_inpcb *)so->so_pcb; 597 if (inp != NULL) 598 return EINVAL; 599 600 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 601 error = soreserve(so, sctp_sendspace, sctp_recvspace); 602 if (error) 603 return error; 604 } 605 error = sctp_inpcb_alloc(so); 606 if (error) 607 return error; 608 inp = (struct sctp_inpcb *)so->so_pcb; 609 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */ 610 inp6 = (struct in6pcb *)inp; 611 612 inp->inp_vflag |= INP_IPV6; 613 if (ip6_v6only) { 614 inp6->in6p_flags |= IN6P_IPV6_V6ONLY; 615 } 616 so->so_send = sctp_sosend; 617 618 inp6->in6p_hops = -1; /* use kernel default */ 619 inp6->in6p_cksum = -1; /* just to be sure */ 620 #ifdef INET 621 /* 622 * XXX: ugly!! 623 * IPv4 TTL initialization is necessary for an IPv6 socket as well, 624 * because the socket may be bound to an IPv6 wildcard address, 625 * which may match an IPv4-mapped IPv6 address. 626 */ 627 inp->inp_ip_ttl = ip_defttl; 628 #endif 629 /* 630 * Hmm what about the IPSEC stuff that is missing here but 631 * in sctp_attach()? 632 */ 633 return 0; 634 } 635 636 static int 637 sctp6_bind(struct socket *so, struct sockaddr *nam, struct lwp *l) 638 { 639 struct sctp_inpcb *inp; 640 struct in6pcb *inp6; 641 int error; 642 643 KASSERT(solocked(so)); 644 645 inp = (struct sctp_inpcb *)so->so_pcb; 646 if (inp == 0) 647 return EINVAL; 648 649 inp6 = (struct in6pcb *)inp; 650 inp->inp_vflag &= ~INP_IPV4; 651 inp->inp_vflag |= INP_IPV6; 652 653 if (nam != NULL && (inp6->in6p_flags & IN6P_IPV6_V6ONLY) == 0) { 654 if (nam->sa_family == AF_INET) { 655 /* binding v4 addr to v6 socket, so reset flags */ 656 inp->inp_vflag |= INP_IPV4; 657 inp->inp_vflag &= ~INP_IPV6; 658 } else { 659 struct sockaddr_in6 *sin6_p; 660 sin6_p = (struct sockaddr_in6 *)nam; 661 662 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) { 663 inp->inp_vflag |= INP_IPV4; 664 } 665 else if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 666 struct sockaddr_in sin; 667 in6_sin6_2_sin(&sin, sin6_p); 668 inp->inp_vflag |= INP_IPV4; 669 inp->inp_vflag &= ~INP_IPV6; 670 error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, l); 671 return error; 672 } 673 } 674 } else if (nam != NULL) { 675 /* IPV6_V6ONLY socket */ 676 if (nam->sa_family == AF_INET) { 677 /* can't bind v4 addr to v6 only socket! */ 678 return EINVAL; 679 } else { 680 struct sockaddr_in6 *sin6_p; 681 sin6_p = (struct sockaddr_in6 *)nam; 682 683 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) 684 /* can't bind v4-mapped addrs either! */ 685 /* NOTE: we don't support SIIT */ 686 return EINVAL; 687 } 688 } 689 error = sctp_inpcb_bind(so, nam, l); 690 return error; 691 } 692 693 /*This could be made common with sctp_detach() since they are identical */ 694 static int 695 sctp6_detach(struct socket *so) 696 { 697 struct sctp_inpcb *inp; 698 699 inp = (struct sctp_inpcb *)so->so_pcb; 700 if (inp == 0) 701 return EINVAL; 702 703 if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) || 704 (so->so_rcv.sb_cc > 0)) 705 sctp_inpcb_free(inp, 1); 706 else 707 sctp_inpcb_free(inp, 0); 708 return 0; 709 } 710 711 static int 712 sctp6_disconnect(struct socket *so) 713 { 714 struct sctp_inpcb *inp; 715 716 inp = (struct sctp_inpcb *)so->so_pcb; 717 if (inp == NULL) { 718 return (ENOTCONN); 719 } 720 if (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { 721 if (LIST_EMPTY(&inp->sctp_asoc_list)) { 722 /* No connection */ 723 return (ENOTCONN); 724 } else { 725 int some_on_streamwheel = 0; 726 struct sctp_association *asoc; 727 struct sctp_tcb *stcb; 728 729 stcb = LIST_FIRST(&inp->sctp_asoc_list); 730 if (stcb == NULL) { 731 return (EINVAL); 732 } 733 asoc = &stcb->asoc; 734 if (!TAILQ_EMPTY(&asoc->out_wheel)) { 735 /* Check to see if some data queued */ 736 struct sctp_stream_out *outs; 737 TAILQ_FOREACH(outs, &asoc->out_wheel, 738 next_spoke) { 739 if (!TAILQ_EMPTY(&outs->outqueue)) { 740 some_on_streamwheel = 1; 741 break; 742 } 743 } 744 } 745 746 if (TAILQ_EMPTY(&asoc->send_queue) && 747 TAILQ_EMPTY(&asoc->sent_queue) && 748 (some_on_streamwheel == 0)) { 749 /* nothing queued to send, so I'm done... */ 750 if ((SCTP_GET_STATE(asoc) != 751 SCTP_STATE_SHUTDOWN_SENT) && 752 (SCTP_GET_STATE(asoc) != 753 SCTP_STATE_SHUTDOWN_ACK_SENT)) { 754 /* only send SHUTDOWN the first time */ 755 #ifdef SCTP_DEBUG 756 if (sctp_debug_on & SCTP_DEBUG_OUTPUT4) { 757 printf("%s:%d sends a shutdown\n", 758 __FILE__, 759 __LINE__ 760 ); 761 } 762 #endif 763 sctp_send_shutdown(stcb, stcb->asoc.primary_destination); 764 sctp_chunk_output(stcb->sctp_ep, stcb, 1); 765 asoc->state = SCTP_STATE_SHUTDOWN_SENT; 766 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, 767 stcb->sctp_ep, stcb, 768 asoc->primary_destination); 769 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, 770 stcb->sctp_ep, stcb, 771 asoc->primary_destination); 772 } 773 } else { 774 /* 775 * we still got (or just got) data to send, 776 * so set SHUTDOWN_PENDING 777 */ 778 /* 779 * XXX sockets draft says that MSG_EOF should 780 * be sent with no data. currently, we will 781 * allow user data to be sent first and move 782 * to SHUTDOWN-PENDING 783 */ 784 asoc->state |= SCTP_STATE_SHUTDOWN_PENDING; 785 } 786 return (0); 787 } 788 } else { 789 /* UDP model does not support this */ 790 return EOPNOTSUPP; 791 } 792 } 793 794 static int 795 sctp6_recvoob(struct socket *so, struct mbuf *m, int flags) 796 { 797 KASSERT(solocked(so)); 798 799 return EOPNOTSUPP; 800 } 801 802 static int 803 sctp6_send(struct socket *so, struct mbuf *m, struct sockaddr *nam, 804 struct mbuf *control, struct lwp *l) 805 { 806 struct sctp_inpcb *inp; 807 struct in6pcb *inp6; 808 #ifdef INET 809 struct sockaddr_in6 *sin6; 810 #endif /* INET */ 811 /* No SPL needed since sctp_output does this */ 812 813 inp = (struct sctp_inpcb *)so->so_pcb; 814 if (inp == NULL) { 815 if (control) { 816 m_freem(control); 817 control = NULL; 818 } 819 m_freem(m); 820 return EINVAL; 821 } 822 inp6 = (struct in6pcb *)inp; 823 /* For the TCP model we may get a NULL addr, if we 824 * are a connected socket thats ok. 825 */ 826 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) && 827 (nam == NULL)) { 828 goto connected_type; 829 } 830 if (nam == NULL) { 831 m_freem(m); 832 if (control) { 833 m_freem(control); 834 control = NULL; 835 } 836 return (EDESTADDRREQ); 837 } 838 839 #ifdef INET 840 sin6 = (struct sockaddr_in6 *)nam; 841 if (inp6->in6p_flags & IN6P_IPV6_V6ONLY) { 842 /* 843 * if IPV6_V6ONLY flag, we discard datagrams 844 * destined to a v4 addr or v4-mapped addr 845 */ 846 if (nam->sa_family == AF_INET) { 847 return EINVAL; 848 } 849 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 850 return EINVAL; 851 } 852 } 853 854 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 855 if (!ip6_v6only) { 856 struct sockaddr_in sin; 857 /* convert v4-mapped into v4 addr and send */ 858 in6_sin6_2_sin(&sin, sin6); 859 return sctp_send(so, m, (struct sockaddr *)&sin, 860 control, l); 861 } else { 862 /* mapped addresses aren't enabled */ 863 return EINVAL; 864 } 865 } 866 #endif /* INET */ 867 connected_type: 868 /* now what about control */ 869 if (control) { 870 if (inp->control) { 871 printf("huh? control set?\n"); 872 m_freem(inp->control); 873 inp->control = NULL; 874 } 875 inp->control = control; 876 } 877 /* add it in possibly */ 878 if ((inp->pkt) && 879 (inp->pkt->m_flags & M_PKTHDR)) { 880 struct mbuf *x; 881 int c_len; 882 883 c_len = 0; 884 /* How big is it */ 885 for (x=m;x;x = x->m_next) { 886 c_len += x->m_len; 887 } 888 inp->pkt->m_pkthdr.len += c_len; 889 } 890 /* Place the data */ 891 if (inp->pkt) { 892 inp->pkt_last->m_next = m; 893 inp->pkt_last = m; 894 } else { 895 inp->pkt_last = inp->pkt = m; 896 } 897 if ((so->so_state & SS_MORETOCOME) == 0) { 898 /* 899 * note with the current version this code will only be 900 * used by OpenBSD, NetBSD and FreeBSD have methods for 901 * re-defining sosend() to use sctp_sosend(). One can 902 * optionaly switch back to this code (by changing back 903 * the defininitions but this is not advisable. 904 */ 905 int ret; 906 ret = sctp_output(inp, inp->pkt , nam, inp->control, l, 0); 907 inp->pkt = NULL; 908 inp->control = NULL; 909 return (ret); 910 } else { 911 return (0); 912 } 913 } 914 915 static int 916 sctp6_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) 917 { 918 KASSERT(solocked(so)); 919 920 if (m) 921 m_freem(m); 922 if (control) 923 m_freem(control); 924 925 return EOPNOTSUPP; 926 } 927 928 static int 929 sctp6_connect(struct socket *so, struct sockaddr *nam, struct lwp *l) 930 { 931 int error = 0; 932 struct sctp_inpcb *inp; 933 struct in6pcb *inp6; 934 struct sctp_tcb *stcb; 935 #ifdef INET 936 struct sockaddr_in6 *sin6; 937 struct sockaddr_storage ss; 938 #endif /* INET */ 939 940 inp6 = (struct in6pcb *)so->so_pcb; 941 inp = (struct sctp_inpcb *)so->so_pcb; 942 if (inp == 0) { 943 return (ECONNRESET); /* I made the same as TCP since 944 * we are not setup? */ 945 } 946 SCTP_ASOC_CREATE_LOCK(inp); 947 SCTP_INP_RLOCK(inp); 948 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 949 SCTP_PCB_FLAGS_UNBOUND) { 950 /* Bind a ephemeral port */ 951 SCTP_INP_RUNLOCK(inp); 952 error = sctp6_bind(so, NULL, l); 953 if (error) { 954 SCTP_ASOC_CREATE_UNLOCK(inp); 955 956 return (error); 957 } 958 SCTP_INP_RLOCK(inp); 959 } 960 961 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 962 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { 963 /* We are already connected AND the TCP model */ 964 SCTP_INP_RUNLOCK(inp); 965 SCTP_ASOC_CREATE_UNLOCK(inp); 966 return (EADDRINUSE); 967 } 968 969 #ifdef INET 970 sin6 = (struct sockaddr_in6 *)nam; 971 if (inp6->in6p_flags & IN6P_IPV6_V6ONLY) { 972 /* 973 * if IPV6_V6ONLY flag, ignore connections 974 * destined to a v4 addr or v4-mapped addr 975 */ 976 if (nam->sa_family == AF_INET) { 977 SCTP_INP_RUNLOCK(inp); 978 SCTP_ASOC_CREATE_UNLOCK(inp); 979 return EINVAL; 980 } 981 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 982 SCTP_INP_RUNLOCK(inp); 983 SCTP_ASOC_CREATE_UNLOCK(inp); 984 return EINVAL; 985 } 986 } 987 988 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 989 if (!ip6_v6only) { 990 /* convert v4-mapped into v4 addr */ 991 in6_sin6_2_sin((struct sockaddr_in *)&ss, sin6); 992 nam = (struct sockaddr *)&ss; 993 } else { 994 /* mapped addresses aren't enabled */ 995 SCTP_INP_RUNLOCK(inp); 996 SCTP_ASOC_CREATE_UNLOCK(inp); 997 return EINVAL; 998 } 999 } 1000 #endif /* INET */ 1001 1002 /* Now do we connect? */ 1003 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 1004 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1005 if (stcb) { 1006 SCTP_TCB_UNLOCK (stcb); 1007 } 1008 SCTP_INP_RUNLOCK(inp); 1009 } else { 1010 SCTP_INP_RUNLOCK(inp); 1011 SCTP_INP_WLOCK(inp); 1012 SCTP_INP_INCR_REF(inp); 1013 SCTP_INP_WUNLOCK(inp); 1014 stcb = sctp_findassociation_ep_addr(&inp, nam, NULL, NULL, NULL); 1015 if (stcb == NULL) { 1016 SCTP_INP_WLOCK(inp); 1017 SCTP_INP_DECR_REF(inp); 1018 SCTP_INP_WUNLOCK(inp); 1019 } 1020 } 1021 1022 if (stcb != NULL) { 1023 /* Already have or am bring up an association */ 1024 SCTP_ASOC_CREATE_UNLOCK(inp); 1025 SCTP_TCB_UNLOCK (stcb); 1026 return (EALREADY); 1027 } 1028 /* We are GOOD to go */ 1029 stcb = sctp_aloc_assoc(inp, nam, 1, &error, 0); 1030 SCTP_ASOC_CREATE_UNLOCK(inp); 1031 if (stcb == NULL) { 1032 /* Gak! no memory */ 1033 return (error); 1034 } 1035 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { 1036 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; 1037 /* Set the connected flag so we can queue data */ 1038 soisconnecting(so); 1039 } 1040 stcb->asoc.state = SCTP_STATE_COOKIE_WAIT; 1041 SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); 1042 sctp_send_initiate(inp, stcb); 1043 SCTP_TCB_UNLOCK (stcb); 1044 return error; 1045 } 1046 1047 static int 1048 sctp6_connect2(struct socket *so, struct socket *so2) 1049 { 1050 KASSERT(solocked(so)); 1051 1052 return EOPNOTSUPP; 1053 } 1054 1055 static int 1056 sctp6_getaddr(struct socket *so, struct sockaddr *nam) 1057 { 1058 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam; 1059 struct sctp_inpcb *inp; 1060 int error; 1061 1062 /* 1063 * Do the malloc first in case it blocks. 1064 */ 1065 memset(sin6, 0, sizeof(*sin6)); 1066 sin6->sin6_family = AF_INET6; 1067 sin6->sin6_len = sizeof(*sin6); 1068 1069 inp = (struct sctp_inpcb *)so->so_pcb; 1070 if (inp == NULL) { 1071 return ECONNRESET; 1072 } 1073 1074 sin6->sin6_port = inp->sctp_lport; 1075 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 1076 /* For the bound all case you get back 0 */ 1077 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 1078 struct sctp_tcb *stcb; 1079 const struct sockaddr_in6 *sin_a6; 1080 struct sctp_nets *net; 1081 int fnd; 1082 1083 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1084 if (stcb == NULL) { 1085 goto notConn6; 1086 } 1087 fnd = 0; 1088 sin_a6 = NULL; 1089 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1090 sin_a6 = (const struct sockaddr_in6 *)rtcache_getdst(&net->ro); 1091 if (sin_a6->sin6_family == AF_INET6) { 1092 fnd = 1; 1093 break; 1094 } 1095 } 1096 if ((!fnd) || (sin_a6 == NULL)) { 1097 /* punt */ 1098 goto notConn6; 1099 } 1100 sin6->sin6_addr = sctp_ipv6_source_address_selection( 1101 inp, stcb, &net->ro, net, 0); 1102 1103 } else { 1104 /* For the bound all case you get back 0 */ 1105 notConn6: 1106 memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr)); 1107 } 1108 } else { 1109 /* Take the first IPv6 address in the list */ 1110 struct sctp_laddr *laddr; 1111 int fnd = 0; 1112 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 1113 if (laddr->ifa->ifa_addr->sa_family == AF_INET6) { 1114 struct sockaddr_in6 *sin_a; 1115 sin_a = (struct sockaddr_in6 *)laddr->ifa->ifa_addr; 1116 sin6->sin6_addr = sin_a->sin6_addr; 1117 fnd = 1; 1118 break; 1119 } 1120 } 1121 if (!fnd) { 1122 return ENOENT; 1123 } 1124 } 1125 /* Scoping things for v6 */ 1126 if ((error = sa6_recoverscope(sin6)) != 0) 1127 return (error); 1128 1129 return (0); 1130 } 1131 1132 static int 1133 sctp6_peeraddr(struct socket *so, struct sockaddr *nam) 1134 { 1135 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam; 1136 int fnd, error; 1137 const struct sockaddr_in6 *sin_a6; 1138 struct sctp_inpcb *inp; 1139 struct sctp_tcb *stcb; 1140 struct sctp_nets *net; 1141 /* 1142 * Do the malloc first in case it blocks. 1143 */ 1144 inp = (struct sctp_inpcb *)so->so_pcb; 1145 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) { 1146 /* UDP type and listeners will drop out here */ 1147 return (ENOTCONN); 1148 } 1149 memset(sin6, 0, sizeof(*sin6)); 1150 sin6->sin6_family = AF_INET6; 1151 sin6->sin6_len = sizeof(*sin6); 1152 1153 /* We must recapture incase we blocked */ 1154 inp = (struct sctp_inpcb *)so->so_pcb; 1155 if (inp == NULL) { 1156 return ECONNRESET; 1157 } 1158 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1159 if (stcb == NULL) { 1160 return ECONNRESET; 1161 } 1162 fnd = 0; 1163 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1164 sin_a6 = (const struct sockaddr_in6 *)rtcache_getdst(&net->ro); 1165 if (sin_a6->sin6_family == AF_INET6) { 1166 fnd = 1; 1167 sin6->sin6_port = stcb->rport; 1168 sin6->sin6_addr = sin_a6->sin6_addr; 1169 break; 1170 } 1171 } 1172 if (!fnd) { 1173 /* No IPv4 address */ 1174 return ENOENT; 1175 } 1176 if ((error = sa6_recoverscope(sin6)) != 0) 1177 return (error); 1178 1179 return (0); 1180 } 1181 1182 static int 1183 sctp6_sockaddr(struct socket *so, struct sockaddr *nam) 1184 { 1185 struct in6pcb *inp6 = sotoin6pcb(so); 1186 int error; 1187 1188 if (inp6 == NULL) 1189 return EINVAL; 1190 1191 /* allow v6 addresses precedence */ 1192 error = sctp6_getaddr(so, nam); 1193 if (error) { 1194 /* try v4 next if v6 failed */ 1195 error = sctp_sockaddr(so, nam); 1196 if (error) { 1197 return (error); 1198 } 1199 1200 /* if I'm V6ONLY, convert it to v4-mapped */ 1201 if (inp6->in6p_flags & IN6P_IPV6_V6ONLY) { 1202 struct sockaddr_in6 sin6; 1203 in6_sin_2_v4mapsin6((struct sockaddr_in *)nam, &sin6); 1204 memcpy(nam, &sin6, sizeof(struct sockaddr_in6)); 1205 } 1206 } 1207 return (error); 1208 } 1209 1210 #if 0 1211 static int 1212 sctp6_getpeeraddr(struct socket *so, struct sockaddr *nam) 1213 { 1214 struct in6pcb *inp6 = sotoin6pcb(so); 1215 int error; 1216 1217 if (inp6 == NULL) 1218 return EINVAL; 1219 1220 /* allow v6 addresses precedence */ 1221 error = sctp6_peeraddr(so, nam); 1222 if (error) { 1223 /* try v4 next if v6 failed */ 1224 error = sctp_peeraddr(so, nam); 1225 if (error) { 1226 return (error); 1227 } 1228 /* if I'm V6ONLY, convert it to v4-mapped */ 1229 if ((inp6->in6p_flags & IN6P_IPV6_V6ONLY)) { 1230 struct sockaddr_in6 sin6; 1231 in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6); 1232 memcpy(addr, &sin6, sizeof(struct sockaddr_in6)); 1233 } 1234 } 1235 return error; 1236 } 1237 #endif 1238 1239 static int 1240 sctp6_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp) 1241 { 1242 int error = 0; 1243 int family; 1244 1245 family = so->so_proto->pr_domain->dom_family; 1246 switch (family) { 1247 #ifdef INET 1248 case PF_INET: 1249 error = in_control(so, cmd, nam, ifp); 1250 break; 1251 #endif 1252 #ifdef INET6 1253 case PF_INET6: 1254 error = in6_control(so, cmd, nam, ifp); 1255 break; 1256 #endif 1257 default: 1258 error = EAFNOSUPPORT; 1259 } 1260 return (error); 1261 } 1262 1263 static int 1264 sctp6_accept(struct socket *so, struct sockaddr *nam) 1265 { 1266 KASSERT(solocked(so)); 1267 1268 return EOPNOTSUPP; 1269 } 1270 1271 static int 1272 sctp6_stat(struct socket *so, struct stat *ub) 1273 { 1274 return 0; 1275 } 1276 1277 static int 1278 sctp6_listen(struct socket *so, struct lwp *l) 1279 { 1280 return sctp_listen(so, l); 1281 } 1282 1283 static int 1284 sctp6_shutdown(struct socket *so) 1285 { 1286 return sctp_shutdown(so); 1287 } 1288 1289 static int 1290 sctp6_rcvd(struct socket *so, int flags, struct lwp *l) 1291 { 1292 KASSERT(solocked(so)); 1293 1294 return sctp_rcvd(so, flags, l); 1295 } 1296 1297 static int 1298 sctp6_purgeif(struct socket *so, struct ifnet *ifp) 1299 { 1300 struct ifaddr *ifa; 1301 IFADDR_FOREACH(ifa, ifp) { 1302 if (ifa->ifa_addr->sa_family == PF_INET6) { 1303 sctp_delete_ip_address(ifa); 1304 } 1305 } 1306 1307 mutex_enter(softnet_lock); 1308 in6_purgeif(ifp); 1309 mutex_exit(softnet_lock); 1310 1311 return 0; 1312 } 1313 1314 PR_WRAP_USRREQS(sctp6) 1315 #define sctp6_attach sctp6_attach_wrapper 1316 #define sctp6_detach sctp6_detach_wrapper 1317 #define sctp6_accept sctp6_accept_wrapper 1318 #define sctp6_bind sctp6_bind_wrapper 1319 #define sctp6_listen sctp6_listen_wrapper 1320 #define sctp6_connect sctp6_connect_wrapper 1321 #define sctp6_connect2 sctp6_connect2_wrapper 1322 #define sctp6_disconnect sctp6_disconnect_wrapper 1323 #define sctp6_shutdown sctp6_shutdown_wrapper 1324 #define sctp6_abort sctp6_abort_wrapper 1325 #define sctp6_ioctl sctp6_ioctl_wrapper 1326 #define sctp6_stat sctp6_stat_wrapper 1327 #define sctp6_peeraddr sctp6_peeraddr_wrapper 1328 #define sctp6_sockaddr sctp6_sockaddr_wrapper 1329 #define sctp6_rcvd sctp6_rcvd_wrapper 1330 #define sctp6_recvoob sctp6_recvoob_wrapper 1331 #define sctp6_send sctp6_send_wrapper 1332 #define sctp6_sendoob sctp6_sendoob_wrapper 1333 #define sctp6_purgeif sctp6_purgeif_wrapper 1334 1335 const struct pr_usrreqs sctp6_usrreqs = { 1336 .pr_attach = sctp6_attach, 1337 .pr_detach = sctp6_detach, 1338 .pr_accept = sctp6_accept, 1339 .pr_bind = sctp6_bind, 1340 .pr_listen = sctp6_listen, 1341 .pr_connect = sctp6_connect, 1342 .pr_connect2 = sctp6_connect2, 1343 .pr_disconnect = sctp6_disconnect, 1344 .pr_shutdown = sctp6_shutdown, 1345 .pr_abort = sctp6_abort, 1346 .pr_ioctl = sctp6_ioctl, 1347 .pr_stat = sctp6_stat, 1348 .pr_peeraddr = sctp6_peeraddr, 1349 .pr_sockaddr = sctp6_sockaddr, 1350 .pr_rcvd = sctp6_rcvd, 1351 .pr_recvoob = sctp6_recvoob, 1352 .pr_send = sctp6_send, 1353 .pr_sendoob = sctp6_sendoob, 1354 .pr_purgeif = sctp6_purgeif, 1355 }; 1356