1 /* $KAME: sctp6_usrreq.c,v 1.38 2005/08/24 08:08:56 suz Exp $ */ 2 /* $NetBSD: sctp6_usrreq.c,v 1.8 2016/08/01 03:15:31 ozaki-r 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 1.8 2016/08/01 03:15:31 ozaki-r 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_get_rcvif_NOMPSAFE(m) == NULL) || 164 (m_get_rcvif_NOMPSAFE(m)->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(sin6tosa(ip6cp->ip6c_src), 466 sin6tosa(&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, sin6tosa(&final), 484 stcb, net); 485 /* inp's ref-count reduced && stcb unlocked */ 486 } 487 } else { 488 if (PRC_IS_REDIRECT(cmd) && inp) { 489 in6_rtchange((struct in6pcb *)inp, 490 inet6ctlerrmap[cmd]); 491 } 492 if (inp) { 493 /* reduce inp's ref-count */ 494 SCTP_INP_WLOCK(inp); 495 SCTP_INP_DECR_REF(inp); 496 SCTP_INP_WUNLOCK(inp); 497 } 498 if (stcb) { 499 SCTP_TCB_UNLOCK(stcb); 500 } 501 } 502 splx(s); 503 } 504 return NULL; 505 } 506 507 /* 508 * this routine can probably be collasped into the one in sctp_userreq.c 509 * since they do the same thing and now we lookup with a sockaddr 510 */ 511 #ifdef __FreeBSD__ 512 static int 513 sctp6_getcred(SYSCTL_HANDLER_ARGS) 514 { 515 struct sockaddr_in6 addrs[2]; 516 struct sctp_inpcb *inp; 517 struct sctp_nets *net; 518 struct sctp_tcb *stcb; 519 int error, s; 520 521 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000 522 error = suser(req->td); 523 #else 524 error = suser(req->p); 525 #endif 526 if (error) 527 return (error); 528 529 if (req->newlen != sizeof(addrs)) 530 return (EINVAL); 531 if (req->oldlen != sizeof(struct ucred)) 532 return (EINVAL); 533 error = SYSCTL_IN(req, addrs, sizeof(addrs)); 534 if (error) 535 return (error); 536 s = splsoftnet(); 537 538 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[0]), 539 sin6tosa(&addrs[1]), 540 &inp, &net, 1); 541 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) { 542 error = ENOENT; 543 if (inp) { 544 SCTP_INP_WLOCK(inp); 545 SCTP_INP_DECR_REF(inp); 546 SCTP_INP_WUNLOCK(inp); 547 } 548 goto out; 549 } 550 error = SYSCTL_OUT(req, inp->sctp_socket->so_cred, 551 sizeof(struct ucred)); 552 553 SCTP_TCB_UNLOCK (stcb); 554 out: 555 splx(s); 556 return (error); 557 } 558 559 SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE|CTLFLAG_RW, 560 0, 0, 561 sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection"); 562 563 #endif 564 565 /* This is the same as the sctp_abort() could be made common */ 566 static int 567 sctp6_abort(struct socket *so) 568 { 569 int s; 570 struct sctp_inpcb *inp; 571 572 KASSERT(solocked(so)); 573 574 s = splsoftnet(); 575 inp = (struct sctp_inpcb *)so->so_pcb; 576 if (inp == 0) 577 return EINVAL; /* ??? possible? panic instead? */ 578 soisdisconnected(so); 579 sctp_inpcb_free(inp, 1); 580 splx(s); 581 return 0; 582 } 583 584 static int 585 sctp6_attach(struct socket *so, int proto) 586 { 587 struct in6pcb *inp6; 588 int error; 589 struct sctp_inpcb *inp; 590 591 sosetlock(so); 592 inp = (struct sctp_inpcb *)so->so_pcb; 593 if (inp != NULL) 594 return EINVAL; 595 596 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 597 error = soreserve(so, sctp_sendspace, sctp_recvspace); 598 if (error) 599 return error; 600 } 601 error = sctp_inpcb_alloc(so); 602 if (error) 603 return error; 604 inp = (struct sctp_inpcb *)so->so_pcb; 605 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */ 606 inp6 = (struct in6pcb *)inp; 607 608 inp->inp_vflag |= INP_IPV6; 609 if (ip6_v6only) { 610 inp6->in6p_flags |= IN6P_IPV6_V6ONLY; 611 } 612 so->so_send = sctp_sosend; 613 614 inp6->in6p_hops = -1; /* use kernel default */ 615 inp6->in6p_cksum = -1; /* just to be sure */ 616 #ifdef INET 617 /* 618 * XXX: ugly!! 619 * IPv4 TTL initialization is necessary for an IPv6 socket as well, 620 * because the socket may be bound to an IPv6 wildcard address, 621 * which may match an IPv4-mapped IPv6 address. 622 */ 623 inp->inp_ip_ttl = ip_defttl; 624 #endif 625 /* 626 * Hmm what about the IPSEC stuff that is missing here but 627 * in sctp_attach()? 628 */ 629 return 0; 630 } 631 632 static int 633 sctp6_bind(struct socket *so, struct sockaddr *nam, struct lwp *l) 634 { 635 struct sctp_inpcb *inp; 636 struct in6pcb *inp6; 637 int error; 638 639 KASSERT(solocked(so)); 640 641 inp = (struct sctp_inpcb *)so->so_pcb; 642 if (inp == 0) 643 return EINVAL; 644 645 inp6 = (struct in6pcb *)inp; 646 inp->inp_vflag &= ~INP_IPV4; 647 inp->inp_vflag |= INP_IPV6; 648 649 if (nam != NULL && (inp6->in6p_flags & IN6P_IPV6_V6ONLY) == 0) { 650 if (nam->sa_family == AF_INET) { 651 /* binding v4 addr to v6 socket, so reset flags */ 652 inp->inp_vflag |= INP_IPV4; 653 inp->inp_vflag &= ~INP_IPV6; 654 } else { 655 struct sockaddr_in6 *sin6_p; 656 sin6_p = (struct sockaddr_in6 *)nam; 657 658 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) { 659 inp->inp_vflag |= INP_IPV4; 660 } 661 else if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 662 struct sockaddr_in sin; 663 in6_sin6_2_sin(&sin, sin6_p); 664 inp->inp_vflag |= INP_IPV4; 665 inp->inp_vflag &= ~INP_IPV6; 666 error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, l); 667 return error; 668 } 669 } 670 } else if (nam != NULL) { 671 /* IPV6_V6ONLY socket */ 672 if (nam->sa_family == AF_INET) { 673 /* can't bind v4 addr to v6 only socket! */ 674 return EINVAL; 675 } else { 676 struct sockaddr_in6 *sin6_p; 677 sin6_p = (struct sockaddr_in6 *)nam; 678 679 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) 680 /* can't bind v4-mapped addrs either! */ 681 /* NOTE: we don't support SIIT */ 682 return EINVAL; 683 } 684 } 685 error = sctp_inpcb_bind(so, nam, l); 686 return error; 687 } 688 689 /*This could be made common with sctp_detach() since they are identical */ 690 static int 691 sctp6_detach(struct socket *so) 692 { 693 struct sctp_inpcb *inp; 694 695 inp = (struct sctp_inpcb *)so->so_pcb; 696 if (inp == 0) 697 return EINVAL; 698 699 if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) || 700 (so->so_rcv.sb_cc > 0)) 701 sctp_inpcb_free(inp, 1); 702 else 703 sctp_inpcb_free(inp, 0); 704 return 0; 705 } 706 707 static int 708 sctp6_disconnect(struct socket *so) 709 { 710 struct sctp_inpcb *inp; 711 712 inp = (struct sctp_inpcb *)so->so_pcb; 713 if (inp == NULL) { 714 return (ENOTCONN); 715 } 716 if (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { 717 if (LIST_EMPTY(&inp->sctp_asoc_list)) { 718 /* No connection */ 719 return (ENOTCONN); 720 } else { 721 int some_on_streamwheel = 0; 722 struct sctp_association *asoc; 723 struct sctp_tcb *stcb; 724 725 stcb = LIST_FIRST(&inp->sctp_asoc_list); 726 if (stcb == NULL) { 727 return (EINVAL); 728 } 729 asoc = &stcb->asoc; 730 if (!TAILQ_EMPTY(&asoc->out_wheel)) { 731 /* Check to see if some data queued */ 732 struct sctp_stream_out *outs; 733 TAILQ_FOREACH(outs, &asoc->out_wheel, 734 next_spoke) { 735 if (!TAILQ_EMPTY(&outs->outqueue)) { 736 some_on_streamwheel = 1; 737 break; 738 } 739 } 740 } 741 742 if (TAILQ_EMPTY(&asoc->send_queue) && 743 TAILQ_EMPTY(&asoc->sent_queue) && 744 (some_on_streamwheel == 0)) { 745 /* nothing queued to send, so I'm done... */ 746 if ((SCTP_GET_STATE(asoc) != 747 SCTP_STATE_SHUTDOWN_SENT) && 748 (SCTP_GET_STATE(asoc) != 749 SCTP_STATE_SHUTDOWN_ACK_SENT)) { 750 /* only send SHUTDOWN the first time */ 751 #ifdef SCTP_DEBUG 752 if (sctp_debug_on & SCTP_DEBUG_OUTPUT4) { 753 printf("%s:%d sends a shutdown\n", 754 __FILE__, 755 __LINE__ 756 ); 757 } 758 #endif 759 sctp_send_shutdown(stcb, stcb->asoc.primary_destination); 760 sctp_chunk_output(stcb->sctp_ep, stcb, 1); 761 asoc->state = SCTP_STATE_SHUTDOWN_SENT; 762 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, 763 stcb->sctp_ep, stcb, 764 asoc->primary_destination); 765 sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, 766 stcb->sctp_ep, stcb, 767 asoc->primary_destination); 768 } 769 } else { 770 /* 771 * we still got (or just got) data to send, 772 * so set SHUTDOWN_PENDING 773 */ 774 /* 775 * XXX sockets draft says that MSG_EOF should 776 * be sent with no data. currently, we will 777 * allow user data to be sent first and move 778 * to SHUTDOWN-PENDING 779 */ 780 asoc->state |= SCTP_STATE_SHUTDOWN_PENDING; 781 } 782 return (0); 783 } 784 } else { 785 /* UDP model does not support this */ 786 return EOPNOTSUPP; 787 } 788 } 789 790 static int 791 sctp6_recvoob(struct socket *so, struct mbuf *m, int flags) 792 { 793 KASSERT(solocked(so)); 794 795 return EOPNOTSUPP; 796 } 797 798 static int 799 sctp6_send(struct socket *so, struct mbuf *m, struct sockaddr *nam, 800 struct mbuf *control, struct lwp *l) 801 { 802 struct sctp_inpcb *inp; 803 struct in6pcb *inp6; 804 #ifdef INET 805 struct sockaddr_in6 *sin6; 806 #endif /* INET */ 807 /* No SPL needed since sctp_output does this */ 808 809 inp = (struct sctp_inpcb *)so->so_pcb; 810 if (inp == NULL) { 811 if (control) { 812 m_freem(control); 813 control = NULL; 814 } 815 m_freem(m); 816 return EINVAL; 817 } 818 inp6 = (struct in6pcb *)inp; 819 /* For the TCP model we may get a NULL addr, if we 820 * are a connected socket thats ok. 821 */ 822 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) && 823 (nam == NULL)) { 824 goto connected_type; 825 } 826 if (nam == NULL) { 827 m_freem(m); 828 if (control) { 829 m_freem(control); 830 control = NULL; 831 } 832 return (EDESTADDRREQ); 833 } 834 835 #ifdef INET 836 sin6 = (struct sockaddr_in6 *)nam; 837 if (inp6->in6p_flags & IN6P_IPV6_V6ONLY) { 838 /* 839 * if IPV6_V6ONLY flag, we discard datagrams 840 * destined to a v4 addr or v4-mapped addr 841 */ 842 if (nam->sa_family == AF_INET) { 843 return EINVAL; 844 } 845 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 846 return EINVAL; 847 } 848 } 849 850 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 851 if (!ip6_v6only) { 852 struct sockaddr_in sin; 853 /* convert v4-mapped into v4 addr and send */ 854 in6_sin6_2_sin(&sin, sin6); 855 return sctp_send(so, m, (struct sockaddr *)&sin, 856 control, l); 857 } else { 858 /* mapped addresses aren't enabled */ 859 return EINVAL; 860 } 861 } 862 #endif /* INET */ 863 connected_type: 864 /* now what about control */ 865 if (control) { 866 if (inp->control) { 867 printf("huh? control set?\n"); 868 m_freem(inp->control); 869 inp->control = NULL; 870 } 871 inp->control = control; 872 } 873 /* add it in possibly */ 874 if ((inp->pkt) && 875 (inp->pkt->m_flags & M_PKTHDR)) { 876 struct mbuf *x; 877 int c_len; 878 879 c_len = 0; 880 /* How big is it */ 881 for (x=m;x;x = x->m_next) { 882 c_len += x->m_len; 883 } 884 inp->pkt->m_pkthdr.len += c_len; 885 } 886 /* Place the data */ 887 if (inp->pkt) { 888 inp->pkt_last->m_next = m; 889 inp->pkt_last = m; 890 } else { 891 inp->pkt_last = inp->pkt = m; 892 } 893 if ((so->so_state & SS_MORETOCOME) == 0) { 894 /* 895 * note with the current version this code will only be 896 * used by OpenBSD, NetBSD and FreeBSD have methods for 897 * re-defining sosend() to use sctp_sosend(). One can 898 * optionaly switch back to this code (by changing back 899 * the defininitions but this is not advisable. 900 */ 901 int ret; 902 ret = sctp_output(inp, inp->pkt , nam, inp->control, l, 0); 903 inp->pkt = NULL; 904 inp->control = NULL; 905 return (ret); 906 } else { 907 return (0); 908 } 909 } 910 911 static int 912 sctp6_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) 913 { 914 KASSERT(solocked(so)); 915 916 if (m) 917 m_freem(m); 918 if (control) 919 m_freem(control); 920 921 return EOPNOTSUPP; 922 } 923 924 static int 925 sctp6_connect(struct socket *so, struct sockaddr *nam, struct lwp *l) 926 { 927 int error = 0; 928 struct sctp_inpcb *inp; 929 struct in6pcb *inp6; 930 struct sctp_tcb *stcb; 931 #ifdef INET 932 struct sockaddr_in6 *sin6; 933 struct sockaddr_storage ss; 934 #endif /* INET */ 935 936 inp6 = (struct in6pcb *)so->so_pcb; 937 inp = (struct sctp_inpcb *)so->so_pcb; 938 if (inp == 0) { 939 return (ECONNRESET); /* I made the same as TCP since 940 * we are not setup? */ 941 } 942 SCTP_ASOC_CREATE_LOCK(inp); 943 SCTP_INP_RLOCK(inp); 944 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 945 SCTP_PCB_FLAGS_UNBOUND) { 946 /* Bind a ephemeral port */ 947 SCTP_INP_RUNLOCK(inp); 948 error = sctp6_bind(so, NULL, l); 949 if (error) { 950 SCTP_ASOC_CREATE_UNLOCK(inp); 951 952 return (error); 953 } 954 SCTP_INP_RLOCK(inp); 955 } 956 957 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 958 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { 959 /* We are already connected AND the TCP model */ 960 SCTP_INP_RUNLOCK(inp); 961 SCTP_ASOC_CREATE_UNLOCK(inp); 962 return (EADDRINUSE); 963 } 964 965 #ifdef INET 966 sin6 = (struct sockaddr_in6 *)nam; 967 if (inp6->in6p_flags & IN6P_IPV6_V6ONLY) { 968 /* 969 * if IPV6_V6ONLY flag, ignore connections 970 * destined to a v4 addr or v4-mapped addr 971 */ 972 if (nam->sa_family == AF_INET) { 973 SCTP_INP_RUNLOCK(inp); 974 SCTP_ASOC_CREATE_UNLOCK(inp); 975 return EINVAL; 976 } 977 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 978 SCTP_INP_RUNLOCK(inp); 979 SCTP_ASOC_CREATE_UNLOCK(inp); 980 return EINVAL; 981 } 982 } 983 984 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 985 if (!ip6_v6only) { 986 /* convert v4-mapped into v4 addr */ 987 in6_sin6_2_sin((struct sockaddr_in *)&ss, sin6); 988 nam = (struct sockaddr *)&ss; 989 } else { 990 /* mapped addresses aren't enabled */ 991 SCTP_INP_RUNLOCK(inp); 992 SCTP_ASOC_CREATE_UNLOCK(inp); 993 return EINVAL; 994 } 995 } 996 #endif /* INET */ 997 998 /* Now do we connect? */ 999 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 1000 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1001 if (stcb) { 1002 SCTP_TCB_UNLOCK (stcb); 1003 } 1004 SCTP_INP_RUNLOCK(inp); 1005 } else { 1006 SCTP_INP_RUNLOCK(inp); 1007 SCTP_INP_WLOCK(inp); 1008 SCTP_INP_INCR_REF(inp); 1009 SCTP_INP_WUNLOCK(inp); 1010 stcb = sctp_findassociation_ep_addr(&inp, nam, NULL, NULL, NULL); 1011 if (stcb == NULL) { 1012 SCTP_INP_WLOCK(inp); 1013 SCTP_INP_DECR_REF(inp); 1014 SCTP_INP_WUNLOCK(inp); 1015 } 1016 } 1017 1018 if (stcb != NULL) { 1019 /* Already have or am bring up an association */ 1020 SCTP_ASOC_CREATE_UNLOCK(inp); 1021 SCTP_TCB_UNLOCK (stcb); 1022 return (EALREADY); 1023 } 1024 /* We are GOOD to go */ 1025 stcb = sctp_aloc_assoc(inp, nam, 1, &error, 0); 1026 SCTP_ASOC_CREATE_UNLOCK(inp); 1027 if (stcb == NULL) { 1028 /* Gak! no memory */ 1029 return (error); 1030 } 1031 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { 1032 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; 1033 /* Set the connected flag so we can queue data */ 1034 soisconnecting(so); 1035 } 1036 stcb->asoc.state = SCTP_STATE_COOKIE_WAIT; 1037 SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); 1038 sctp_send_initiate(inp, stcb); 1039 SCTP_TCB_UNLOCK (stcb); 1040 return error; 1041 } 1042 1043 static int 1044 sctp6_connect2(struct socket *so, struct socket *so2) 1045 { 1046 KASSERT(solocked(so)); 1047 1048 return EOPNOTSUPP; 1049 } 1050 1051 static int 1052 sctp6_getaddr(struct socket *so, struct sockaddr *nam) 1053 { 1054 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam; 1055 struct sctp_inpcb *inp; 1056 int error; 1057 1058 /* 1059 * Do the malloc first in case it blocks. 1060 */ 1061 memset(sin6, 0, sizeof(*sin6)); 1062 sin6->sin6_family = AF_INET6; 1063 sin6->sin6_len = sizeof(*sin6); 1064 1065 inp = (struct sctp_inpcb *)so->so_pcb; 1066 if (inp == NULL) { 1067 return ECONNRESET; 1068 } 1069 1070 sin6->sin6_port = inp->sctp_lport; 1071 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 1072 /* For the bound all case you get back 0 */ 1073 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 1074 struct sctp_tcb *stcb; 1075 const struct sockaddr_in6 *sin_a6; 1076 struct sctp_nets *net; 1077 int fnd; 1078 1079 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1080 if (stcb == NULL) { 1081 goto notConn6; 1082 } 1083 fnd = 0; 1084 sin_a6 = NULL; 1085 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1086 sin_a6 = (const struct sockaddr_in6 *)rtcache_getdst(&net->ro); 1087 if (sin_a6->sin6_family == AF_INET6) { 1088 fnd = 1; 1089 break; 1090 } 1091 } 1092 if ((!fnd) || (sin_a6 == NULL)) { 1093 /* punt */ 1094 goto notConn6; 1095 } 1096 sin6->sin6_addr = sctp_ipv6_source_address_selection( 1097 inp, stcb, &net->ro, net, 0); 1098 1099 } else { 1100 /* For the bound all case you get back 0 */ 1101 notConn6: 1102 memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr)); 1103 } 1104 } else { 1105 /* Take the first IPv6 address in the list */ 1106 struct sctp_laddr *laddr; 1107 int fnd = 0; 1108 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 1109 if (laddr->ifa->ifa_addr->sa_family == AF_INET6) { 1110 struct sockaddr_in6 *sin_a; 1111 sin_a = (struct sockaddr_in6 *)laddr->ifa->ifa_addr; 1112 sin6->sin6_addr = sin_a->sin6_addr; 1113 fnd = 1; 1114 break; 1115 } 1116 } 1117 if (!fnd) { 1118 return ENOENT; 1119 } 1120 } 1121 /* Scoping things for v6 */ 1122 if ((error = sa6_recoverscope(sin6)) != 0) 1123 return (error); 1124 1125 return (0); 1126 } 1127 1128 static int 1129 sctp6_peeraddr(struct socket *so, struct sockaddr *nam) 1130 { 1131 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam; 1132 int fnd, error; 1133 const struct sockaddr_in6 *sin_a6; 1134 struct sctp_inpcb *inp; 1135 struct sctp_tcb *stcb; 1136 struct sctp_nets *net; 1137 /* 1138 * Do the malloc first in case it blocks. 1139 */ 1140 inp = (struct sctp_inpcb *)so->so_pcb; 1141 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) { 1142 /* UDP type and listeners will drop out here */ 1143 return (ENOTCONN); 1144 } 1145 memset(sin6, 0, sizeof(*sin6)); 1146 sin6->sin6_family = AF_INET6; 1147 sin6->sin6_len = sizeof(*sin6); 1148 1149 /* We must recapture incase we blocked */ 1150 inp = (struct sctp_inpcb *)so->so_pcb; 1151 if (inp == NULL) { 1152 return ECONNRESET; 1153 } 1154 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1155 if (stcb == NULL) { 1156 return ECONNRESET; 1157 } 1158 fnd = 0; 1159 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1160 sin_a6 = (const struct sockaddr_in6 *)rtcache_getdst(&net->ro); 1161 if (sin_a6->sin6_family == AF_INET6) { 1162 fnd = 1; 1163 sin6->sin6_port = stcb->rport; 1164 sin6->sin6_addr = sin_a6->sin6_addr; 1165 break; 1166 } 1167 } 1168 if (!fnd) { 1169 /* No IPv4 address */ 1170 return ENOENT; 1171 } 1172 if ((error = sa6_recoverscope(sin6)) != 0) 1173 return (error); 1174 1175 return (0); 1176 } 1177 1178 static int 1179 sctp6_sockaddr(struct socket *so, struct sockaddr *nam) 1180 { 1181 struct in6pcb *inp6 = sotoin6pcb(so); 1182 int error; 1183 1184 if (inp6 == NULL) 1185 return EINVAL; 1186 1187 /* allow v6 addresses precedence */ 1188 error = sctp6_getaddr(so, nam); 1189 if (error) { 1190 /* try v4 next if v6 failed */ 1191 error = sctp_sockaddr(so, nam); 1192 if (error) { 1193 return (error); 1194 } 1195 1196 /* if I'm V6ONLY, convert it to v4-mapped */ 1197 if (inp6->in6p_flags & IN6P_IPV6_V6ONLY) { 1198 struct sockaddr_in6 sin6; 1199 in6_sin_2_v4mapsin6((struct sockaddr_in *)nam, &sin6); 1200 memcpy(nam, &sin6, sizeof(struct sockaddr_in6)); 1201 } 1202 } 1203 return (error); 1204 } 1205 1206 #if 0 1207 static int 1208 sctp6_getpeeraddr(struct socket *so, struct sockaddr *nam) 1209 { 1210 struct in6pcb *inp6 = sotoin6pcb(so); 1211 int error; 1212 1213 if (inp6 == NULL) 1214 return EINVAL; 1215 1216 /* allow v6 addresses precedence */ 1217 error = sctp6_peeraddr(so, nam); 1218 if (error) { 1219 /* try v4 next if v6 failed */ 1220 error = sctp_peeraddr(so, nam); 1221 if (error) { 1222 return (error); 1223 } 1224 /* if I'm V6ONLY, convert it to v4-mapped */ 1225 if ((inp6->in6p_flags & IN6P_IPV6_V6ONLY)) { 1226 struct sockaddr_in6 sin6; 1227 in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6); 1228 memcpy(addr, &sin6, sizeof(struct sockaddr_in6)); 1229 } 1230 } 1231 return error; 1232 } 1233 #endif 1234 1235 static int 1236 sctp6_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp) 1237 { 1238 int error = 0; 1239 int family; 1240 1241 family = so->so_proto->pr_domain->dom_family; 1242 switch (family) { 1243 #ifdef INET 1244 case PF_INET: 1245 error = in_control(so, cmd, nam, ifp); 1246 break; 1247 #endif 1248 #ifdef INET6 1249 case PF_INET6: 1250 error = in6_control(so, cmd, nam, ifp); 1251 break; 1252 #endif 1253 default: 1254 error = EAFNOSUPPORT; 1255 } 1256 return (error); 1257 } 1258 1259 static int 1260 sctp6_accept(struct socket *so, struct sockaddr *nam) 1261 { 1262 KASSERT(solocked(so)); 1263 1264 return EOPNOTSUPP; 1265 } 1266 1267 static int 1268 sctp6_stat(struct socket *so, struct stat *ub) 1269 { 1270 return 0; 1271 } 1272 1273 static int 1274 sctp6_listen(struct socket *so, struct lwp *l) 1275 { 1276 return sctp_listen(so, l); 1277 } 1278 1279 static int 1280 sctp6_shutdown(struct socket *so) 1281 { 1282 return sctp_shutdown(so); 1283 } 1284 1285 static int 1286 sctp6_rcvd(struct socket *so, int flags, struct lwp *l) 1287 { 1288 KASSERT(solocked(so)); 1289 1290 return sctp_rcvd(so, flags, l); 1291 } 1292 1293 static int 1294 sctp6_purgeif(struct socket *so, struct ifnet *ifp) 1295 { 1296 struct ifaddr *ifa; 1297 /* FIXME NOMPSAFE */ 1298 IFADDR_READER_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