1 /* $KAME: sctp6_usrreq.c,v 1.38 2005/08/24 08:08:56 suz Exp $ */ 2 /* $NetBSD: sctp6_usrreq.c,v 1.22 2020/04/27 19:33:48 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 1.22 2020/04/27 19:33:48 rjs Exp $"); 37 38 #ifdef _KERNEL_OPT 39 #include "opt_inet.h" 40 #include "opt_ipsec.h" 41 #include "opt_sctp.h" 42 #include "opt_net_mpsafe.h" 43 #endif /* _KERNEL_OPT */ 44 45 #include <sys/param.h> 46 #include <sys/kernel.h> 47 #include <sys/mbuf.h> 48 #include <sys/domain.h> 49 #include <sys/protosw.h> 50 #include <sys/socket.h> 51 #include <sys/malloc.h> 52 #include <sys/socketvar.h> 53 #include <sys/sysctl.h> 54 #include <sys/errno.h> 55 #include <sys/stat.h> 56 #include <sys/systm.h> 57 #include <sys/syslog.h> 58 #include <sys/proc.h> 59 #include <net/if.h> 60 #include <net/route.h> 61 #include <net/if_types.h> 62 #include <netinet/in.h> 63 #include <netinet/in_systm.h> 64 #include <netinet/ip.h> 65 #include <netinet/in_pcb.h> 66 #include <netinet/in_var.h> 67 #include <netinet/ip_var.h> 68 #include <netinet/sctp_pcb.h> 69 #include <netinet/sctp_header.h> 70 #include <netinet/sctp_var.h> 71 #include <netinet/sctputil.h> 72 #include <netinet/sctp_output.h> 73 #include <netinet/sctp_input.h> 74 #include <netinet/sctp_asconf.h> 75 #include <netinet/sctp_route.h> 76 #include <netinet6/ip6_var.h> 77 #include <netinet6/scope6_var.h> 78 #include <netinet/ip6.h> 79 #include <netinet6/in6_pcb.h> 80 #include <netinet/icmp6.h> 81 #include <netinet6/sctp6_var.h> 82 #include <netinet6/ip6protosw.h> 83 84 #ifdef IPSEC 85 #include <netipsec/ipsec.h> 86 #include <netipsec/ipsec6.h> 87 #endif /*IPSEC*/ 88 89 #if defined(NFAITH) && NFAITH > 0 90 #include <net/if_faith.h> 91 #endif 92 93 #if defined(HAVE_NRL_INPCB) || defined(__FreeBSD__) 94 #ifndef in6pcb 95 #define in6pcb inpcb 96 #endif 97 #ifndef sotoin6pcb 98 #define sotoin6pcb sotoinpcb 99 #endif 100 #endif 101 102 #ifdef SCTP_DEBUG 103 extern u_int32_t sctp_debug_on; 104 #endif 105 106 static int sctp6_detach(struct socket *so); 107 108 extern int sctp_no_csum_on_loopback; 109 110 int 111 sctp6_input(struct mbuf **mp, int *offp, int proto) 112 { 113 struct mbuf *m = *mp; 114 struct ip6_hdr *ip6; 115 struct sctphdr *sh; 116 struct sctp_inpcb *in6p = NULL; 117 struct sctp_nets *net; 118 int refcount_up = 0; 119 u_int32_t check, calc_check; 120 struct inpcb *in6p_ip; 121 struct sctp_chunkhdr *ch; 122 struct mbuf *opts = NULL; 123 int length, mlen, offset, iphlen; 124 u_int8_t ecn_bits; 125 struct sctp_tcb *stcb = NULL; 126 int off = *offp; 127 int s; 128 129 ip6 = mtod(m, struct ip6_hdr *); 130 /* Ensure that (sctphdr + sctp_chunkhdr) in a row. */ 131 IP6_EXTHDR_GET(sh, struct sctphdr *, m, off, sizeof(*sh) + sizeof(*ch)); 132 if (sh == NULL) { 133 sctp_pegs[SCTP_HDR_DROPS]++; 134 return IPPROTO_DONE; 135 } 136 ch = (struct sctp_chunkhdr *)((vaddr_t)sh + sizeof(struct sctphdr)); 137 138 iphlen = off; 139 offset = iphlen + sizeof(*sh) + sizeof(*ch); 140 141 #if defined(NFAITH) && NFAITH > 0 142 if (faithprefix(&ip6->ip6_dst)) 143 goto bad; 144 #endif /* NFAITH defined and > 0 */ 145 sctp_pegs[SCTP_INPKTS]++; 146 #ifdef SCTP_DEBUG 147 if (sctp_debug_on & SCTP_DEBUG_INPUT1) { 148 printf("V6 input gets a packet iphlen:%d pktlen:%d\n", iphlen, m->m_pkthdr.len); 149 } 150 #endif 151 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) { 152 /* No multi-cast support in SCTP */ 153 sctp_pegs[SCTP_IN_MCAST]++; 154 goto bad; 155 } 156 /* destination port of 0 is illegal, based on RFC2960. */ 157 if (sh->dest_port == 0) 158 goto bad; 159 if ((sctp_no_csum_on_loopback == 0) || 160 (m_get_rcvif_NOMPSAFE(m) == NULL) || 161 (m_get_rcvif_NOMPSAFE(m)->if_type != IFT_LOOP)) { 162 /* we do NOT validate things from the loopback if the 163 * sysctl is set to 1. 164 */ 165 check = sh->checksum; /* save incoming checksum */ 166 if ((check == 0) && (sctp_no_csum_on_loopback)) { 167 /* special hook for where we got a local address 168 * somehow routed across a non IFT_LOOP type interface 169 */ 170 if (IN6_ARE_ADDR_EQUAL(&ip6->ip6_src, &ip6->ip6_dst)) 171 goto sctp_skip_csum; 172 } 173 sh->checksum = 0; /* prepare for calc */ 174 calc_check = sctp_calculate_sum(m, &mlen, iphlen); 175 if (calc_check != check) { 176 #ifdef SCTP_DEBUG 177 if (sctp_debug_on & SCTP_DEBUG_INPUT1) { 178 printf("Bad CSUM on SCTP packet calc_check:%x check:%x m:%p mlen:%d iphlen:%d\n", 179 calc_check, check, m, 180 mlen, iphlen); 181 } 182 #endif 183 stcb = sctp_findassociation_addr(m, iphlen, offset - sizeof(*ch), 184 sh, ch, &in6p, &net); 185 /* in6p's ref-count increased && stcb locked */ 186 if ((in6p) && (stcb)) { 187 sctp_send_packet_dropped(stcb, net, m, iphlen, 1); 188 sctp_chunk_output((struct sctp_inpcb *)in6p, stcb, 2); 189 } else if ((in6p != NULL) && (stcb == NULL)) { 190 refcount_up = 1; 191 } 192 sctp_pegs[SCTP_BAD_CSUM]++; 193 goto bad; 194 } 195 sh->checksum = calc_check; 196 } else { 197 sctp_skip_csum: 198 mlen = m->m_pkthdr.len; 199 } 200 net = NULL; 201 /* 202 * Locate pcb and tcb for datagram 203 * sctp_findassociation_addr() wants IP/SCTP/first chunk header... 204 */ 205 #ifdef SCTP_DEBUG 206 if (sctp_debug_on & SCTP_DEBUG_INPUT1) { 207 printf("V6 Find the association\n"); 208 } 209 #endif 210 stcb = sctp_findassociation_addr(m, iphlen, offset - sizeof(*ch), 211 sh, ch, &in6p, &net); 212 /* in6p's ref-count increased */ 213 if (in6p == NULL) { 214 struct sctp_init_chunk *init_chk, chunk_buf; 215 216 sctp_pegs[SCTP_NOPORTS]++; 217 if (ch->chunk_type == SCTP_INITIATION) { 218 /* we do a trick here to get the INIT tag, 219 * dig in and get the tag from the INIT and 220 * put it in the common header. 221 */ 222 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m, 223 iphlen + sizeof(*sh), sizeof(*init_chk), 224 (u_int8_t *)&chunk_buf); 225 sh->v_tag = init_chk->init.initiate_tag; 226 } 227 sctp_send_abort(m, iphlen, sh, 0, NULL); 228 goto bad; 229 } else if (stcb == NULL) { 230 refcount_up = 1; 231 } 232 in6p_ip = (struct inpcb *)in6p; 233 #ifdef IPSEC 234 /* 235 * Check AH/ESP integrity. 236 */ 237 if (ipsec_used && ipsec_in_reject(m, (struct in6pcb *)in6p_ip)) { 238 /* XXX */ 239 #if 0 240 /* FIX ME: need to find right stat */ 241 ipsec6stat.in_polvio++; 242 #endif 243 goto bad; 244 } 245 #endif /*IPSEC*/ 246 247 /* 248 * Construct sockaddr format source address. 249 * Stuff source address and datagram in user buffer. 250 */ 251 if ((in6p->ip_inp.inp.inp_flags & INP_CONTROLOPTS) 252 #ifndef __OpenBSD__ 253 || (in6p->sctp_socket->so_options & SO_TIMESTAMP) 254 #endif 255 ) { 256 #if defined(__FreeBSD__) || defined(__APPLE__) 257 #if (defined(SCTP_BASE_FREEBSD) && __FreeBSD_version < 501113) || defined(__APPLE__) 258 ip6_savecontrol(in6p_ip, &opts, ip6, m); 259 #elif __FreeBSD_version >= 440000 || (defined(SCTP_BASE_FREEBSD) && __FreeBSD_version >= 501113) 260 ip6_savecontrol(in6p_ip, m, &opts); 261 #else 262 ip6_savecontrol(in6p_ip, m, &opts, NULL); 263 #endif 264 #elif defined(__NetBSD__) 265 ip6_savecontrol((struct in6pcb *)in6p_ip, &opts, ip6, m); 266 #else 267 ip6_savecontrol((struct in6pcb *)in6p_ip, m, &opts); 268 #endif 269 } 270 271 /* 272 * CONTROL chunk processing 273 */ 274 length = ntohs(ip6->ip6_plen) + iphlen; 275 offset -= sizeof(*ch); 276 ecn_bits = ((ntohl(ip6->ip6_flow) >> 20) & 0x000000ff); 277 s = splsoftnet(); 278 (void)sctp_common_input_processing(&m, iphlen, offset, length, sh, ch, 279 in6p, stcb, net, ecn_bits); 280 /* inp's ref-count reduced && stcb unlocked */ 281 splx(s); 282 /* XXX this stuff below gets moved to appropriate parts later... */ 283 if (m) 284 m_freem(m); 285 if (opts) 286 m_freem(opts); 287 288 if ((in6p) && refcount_up){ 289 /* reduce ref-count */ 290 SCTP_INP_WLOCK(in6p); 291 SCTP_INP_DECR_REF(in6p); 292 SCTP_INP_WUNLOCK(in6p); 293 } 294 295 return IPPROTO_DONE; 296 297 bad: 298 if (stcb) { 299 SCTP_TCB_UNLOCK(stcb); 300 } 301 302 if ((in6p) && refcount_up){ 303 /* reduce ref-count */ 304 SCTP_INP_WLOCK(in6p); 305 SCTP_INP_DECR_REF(in6p); 306 SCTP_INP_WUNLOCK(in6p); 307 } 308 if (m) { 309 m_freem(m); 310 } 311 if (opts) { 312 m_freem(opts); 313 } 314 return IPPROTO_DONE; 315 } 316 317 318 static void 319 sctp6_notify_mbuf(struct sctp_inpcb *inp, 320 struct icmp6_hdr *icmp6, 321 struct sctphdr *sh, 322 struct sctp_tcb *stcb, 323 struct sctp_nets *net) 324 { 325 unsigned int nxtsz; 326 327 if ((inp == NULL) || (stcb == NULL) || (net == NULL) || 328 (icmp6 == NULL) || (sh == NULL)) { 329 goto out; 330 } 331 332 /* First do we even look at it? */ 333 if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) 334 goto out; 335 336 if (icmp6->icmp6_type != ICMP6_PACKET_TOO_BIG) { 337 /* not PACKET TO BIG */ 338 goto out; 339 } 340 /* 341 * ok we need to look closely. We could even get smarter and 342 * look at anyone that we sent to in case we get a different 343 * ICMP that tells us there is no way to reach a host, but for 344 * this impl, all we care about is MTU discovery. 345 */ 346 nxtsz = ntohl(icmp6->icmp6_mtu); 347 /* Stop any PMTU timer */ 348 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL); 349 350 /* Adjust destination size limit */ 351 if (net->mtu > nxtsz) { 352 net->mtu = nxtsz; 353 } 354 /* now what about the ep? */ 355 if (stcb->asoc.smallest_mtu > nxtsz) { 356 struct sctp_tmit_chunk *chk; 357 struct sctp_stream_out *strm; 358 /* Adjust that too */ 359 stcb->asoc.smallest_mtu = nxtsz; 360 /* now off to subtract IP_DF flag if needed */ 361 362 TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) { 363 if ((chk->send_size+IP_HDR_SIZE) > nxtsz) { 364 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 365 } 366 } 367 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { 368 if ((chk->send_size+IP_HDR_SIZE) > nxtsz) { 369 /* 370 * For this guy we also mark for immediate 371 * resend since we sent to big of chunk 372 */ 373 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 374 if (chk->sent != SCTP_DATAGRAM_RESEND) 375 stcb->asoc.sent_queue_retran_cnt++; 376 chk->sent = SCTP_DATAGRAM_RESEND; 377 chk->rec.data.doing_fast_retransmit = 0; 378 379 chk->sent = SCTP_DATAGRAM_RESEND; 380 /* Clear any time so NO RTT is being done */ 381 chk->sent_rcv_time.tv_sec = 0; 382 chk->sent_rcv_time.tv_usec = 0; 383 stcb->asoc.total_flight -= chk->send_size; 384 net->flight_size -= chk->send_size; 385 } 386 } 387 TAILQ_FOREACH(strm, &stcb->asoc.out_wheel, next_spoke) { 388 TAILQ_FOREACH(chk, &strm->outqueue, sctp_next) { 389 if ((chk->send_size+IP_HDR_SIZE) > nxtsz) { 390 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 391 } 392 } 393 } 394 } 395 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL); 396 out: 397 if (inp) { 398 /* reduce inp's ref-count */ 399 SCTP_INP_WLOCK(inp); 400 SCTP_INP_DECR_REF(inp); 401 SCTP_INP_WUNLOCK(inp); 402 } 403 if (stcb) { 404 SCTP_TCB_UNLOCK(stcb); 405 } 406 } 407 408 409 void * 410 sctp6_ctlinput(int cmd, const struct sockaddr *pktdst, void *d) 411 { 412 struct sctphdr sh; 413 struct ip6ctlparam *ip6cp = NULL; 414 int s, cm; 415 416 if (pktdst->sa_family != AF_INET6 || 417 pktdst->sa_len != sizeof(struct sockaddr_in6)) 418 return NULL; 419 420 if ((unsigned)cmd >= PRC_NCMDS) 421 return NULL; 422 if (PRC_IS_REDIRECT(cmd)) { 423 d = NULL; 424 } else if (inet6ctlerrmap[cmd] == 0) { 425 return NULL; 426 } 427 428 /* if the parameter is from icmp6, decode it. */ 429 if (d != NULL) { 430 ip6cp = (struct ip6ctlparam *)d; 431 } else { 432 ip6cp = (struct ip6ctlparam *)NULL; 433 } 434 435 if (ip6cp) { 436 /* 437 * XXX: We assume that when IPV6 is non NULL, 438 * M and OFF are valid. 439 */ 440 /* check if we can safely examine src and dst ports */ 441 struct sctp_inpcb *inp; 442 struct sctp_tcb *stcb; 443 struct sctp_nets *net; 444 struct sockaddr_in6 final; 445 446 if (ip6cp->ip6c_m == NULL || 447 (size_t)ip6cp->ip6c_m->m_pkthdr.len < (ip6cp->ip6c_off + sizeof(sh))) 448 return NULL; 449 450 memset(&sh, 0, sizeof(sh)); 451 memset(&final, 0, sizeof(final)); 452 inp = NULL; 453 net = NULL; 454 m_copydata(ip6cp->ip6c_m, ip6cp->ip6c_off, sizeof(sh), 455 (void *)&sh); 456 ip6cp->ip6c_src->sin6_port = sh.src_port; 457 final.sin6_len = sizeof(final); 458 final.sin6_family = AF_INET6; 459 final.sin6_addr = ((const struct sockaddr_in6 *)pktdst)->sin6_addr; 460 final.sin6_port = sh.dest_port; 461 s = splsoftnet(); 462 stcb = sctp_findassociation_addr_sa(sin6tosa(ip6cp->ip6c_src), 463 sin6tosa(&final), 464 &inp, &net, 1); 465 /* inp's ref-count increased && stcb locked */ 466 if (stcb != NULL && inp && (inp->sctp_socket != NULL)) { 467 if (cmd == PRC_MSGSIZE) { 468 sctp6_notify_mbuf(inp, 469 ip6cp->ip6c_icmp6, 470 &sh, 471 stcb, 472 net); 473 /* inp's ref-count reduced && stcb unlocked */ 474 } else { 475 if (cmd == PRC_HOSTDEAD) { 476 cm = EHOSTUNREACH; 477 } else { 478 cm = inet6ctlerrmap[cmd]; 479 } 480 sctp_notify(inp, cm, &sh, sin6tosa(&final), 481 stcb, net); 482 /* inp's ref-count reduced && stcb unlocked */ 483 } 484 } else { 485 if (PRC_IS_REDIRECT(cmd) && inp) { 486 in6_rtchange((struct in6pcb *)inp, 487 inet6ctlerrmap[cmd]); 488 } 489 if (inp) { 490 /* reduce inp's ref-count */ 491 SCTP_INP_WLOCK(inp); 492 SCTP_INP_DECR_REF(inp); 493 SCTP_INP_WUNLOCK(inp); 494 } 495 if (stcb) { 496 SCTP_TCB_UNLOCK(stcb); 497 } 498 } 499 splx(s); 500 } 501 return NULL; 502 } 503 504 /* 505 * this routine can probably be collasped into the one in sctp_userreq.c 506 * since they do the same thing and now we lookup with a sockaddr 507 */ 508 #ifdef __FreeBSD__ 509 static int 510 sctp6_getcred(SYSCTL_HANDLER_ARGS) 511 { 512 struct sockaddr_in6 addrs[2]; 513 struct sctp_inpcb *inp; 514 struct sctp_nets *net; 515 struct sctp_tcb *stcb; 516 int error, s; 517 518 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000 519 error = suser(req->td); 520 #else 521 error = suser(req->p); 522 #endif 523 if (error) 524 return (error); 525 526 if (req->newlen != sizeof(addrs)) 527 return (EINVAL); 528 if (req->oldlen != sizeof(struct ucred)) 529 return (EINVAL); 530 error = SYSCTL_IN(req, addrs, sizeof(addrs)); 531 if (error) 532 return (error); 533 s = splsoftnet(); 534 535 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[0]), 536 sin6tosa(&addrs[1]), 537 &inp, &net, 1); 538 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) { 539 error = ENOENT; 540 if (inp) { 541 SCTP_INP_WLOCK(inp); 542 SCTP_INP_DECR_REF(inp); 543 SCTP_INP_WUNLOCK(inp); 544 } 545 goto out; 546 } 547 error = SYSCTL_OUT(req, inp->sctp_socket->so_cred, 548 sizeof(struct ucred)); 549 550 SCTP_TCB_UNLOCK (stcb); 551 out: 552 splx(s); 553 return (error); 554 } 555 556 SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE|CTLFLAG_RW, 557 0, 0, 558 sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection"); 559 560 #endif 561 562 /* This is the same as the sctp_abort() could be made common */ 563 static int 564 sctp6_abort(struct socket *so) 565 { 566 int s; 567 struct sctp_inpcb *inp; 568 569 KASSERT(solocked(so)); 570 571 s = splsoftnet(); 572 inp = (struct sctp_inpcb *)so->so_pcb; 573 if (inp == 0) 574 return EINVAL; /* ??? possible? panic instead? */ 575 soisdisconnected(so); 576 sctp_inpcb_free(inp, 1); 577 splx(s); 578 return 0; 579 } 580 581 static int 582 sctp6_attach(struct socket *so, int proto) 583 { 584 struct in6pcb *inp6; 585 int error; 586 struct sctp_inpcb *inp; 587 588 sosetlock(so); 589 inp = (struct sctp_inpcb *)so->so_pcb; 590 if (inp != NULL) 591 return EINVAL; 592 593 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 594 error = soreserve(so, sctp_sendspace, sctp_recvspace); 595 if (error) 596 return error; 597 } 598 error = sctp_inpcb_alloc(so); 599 if (error) 600 return error; 601 inp = (struct sctp_inpcb *)so->so_pcb; 602 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */ 603 inp6 = (struct in6pcb *)inp; 604 605 inp->inp_vflag |= INP_IPV6; 606 if (ip6_v6only) { 607 inp6->in6p_flags |= IN6P_IPV6_V6ONLY; 608 } 609 so->so_send = sctp_sosend; 610 611 #ifdef IPSEC 612 inp6->in6p_af = proto; 613 #endif 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 /* 838 * XXX XXX XXX Check sin6->sin6_len? 839 */ 840 if (inp6->in6p_flags & IN6P_IPV6_V6ONLY) { 841 /* 842 * if IPV6_V6ONLY flag, we discard datagrams 843 * destined to a v4 addr or v4-mapped addr 844 */ 845 if (nam->sa_family == AF_INET) { 846 return EINVAL; 847 } 848 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 849 return EINVAL; 850 } 851 } 852 853 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 854 if (!ip6_v6only) { 855 struct sockaddr_in sin; 856 /* convert v4-mapped into v4 addr and send */ 857 in6_sin6_2_sin(&sin, sin6); 858 return sctp_send(so, m, (struct sockaddr *)&sin, 859 control, l); 860 } else { 861 /* mapped addresses aren't enabled */ 862 return EINVAL; 863 } 864 } 865 #endif /* INET */ 866 connected_type: 867 /* now what about control */ 868 if (control) { 869 if (inp->control) { 870 printf("huh? control set?\n"); 871 m_freem(inp->control); 872 inp->control = NULL; 873 } 874 inp->control = control; 875 } 876 /* add it in possibly */ 877 if ((inp->pkt) && 878 (inp->pkt->m_flags & M_PKTHDR)) { 879 struct mbuf *x; 880 int c_len; 881 882 c_len = 0; 883 /* How big is it */ 884 for (x=m;x;x = x->m_next) { 885 c_len += x->m_len; 886 } 887 inp->pkt->m_pkthdr.len += c_len; 888 } 889 /* Place the data */ 890 if (inp->pkt) { 891 inp->pkt_last->m_next = m; 892 inp->pkt_last = m; 893 } else { 894 inp->pkt_last = inp->pkt = m; 895 } 896 if ((so->so_state & SS_MORETOCOME) == 0) { 897 /* 898 * note with the current version this code will only be 899 * used by OpenBSD, NetBSD and FreeBSD have methods for 900 * re-defining sosend() to use sctp_sosend(). One can 901 * optionaly switch back to this code (by changing back 902 * the defininitions but this is not advisable. 903 */ 904 int ret; 905 ret = sctp_output(inp, inp->pkt , nam, inp->control, l, 0); 906 inp->pkt = NULL; 907 inp->control = NULL; 908 return (ret); 909 } else { 910 return (0); 911 } 912 } 913 914 static int 915 sctp6_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control) 916 { 917 KASSERT(solocked(so)); 918 919 m_freem(m); 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; 968 969 /* 970 * XXX XXX XXX Check sin6->sin6_len? 971 */ 972 973 if (inp6->in6p_flags & IN6P_IPV6_V6ONLY) { 974 /* 975 * if IPV6_V6ONLY flag, ignore connections 976 * destined to a v4 addr or v4-mapped addr 977 */ 978 if (nam->sa_family == AF_INET) { 979 SCTP_INP_RUNLOCK(inp); 980 SCTP_ASOC_CREATE_UNLOCK(inp); 981 return EINVAL; 982 } 983 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 984 SCTP_INP_RUNLOCK(inp); 985 SCTP_ASOC_CREATE_UNLOCK(inp); 986 return EINVAL; 987 } 988 } 989 990 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 991 if (!ip6_v6only) { 992 /* convert v4-mapped into v4 addr */ 993 in6_sin6_2_sin((struct sockaddr_in *)&ss, sin6); 994 nam = (struct sockaddr *)&ss; 995 } else { 996 /* mapped addresses aren't enabled */ 997 SCTP_INP_RUNLOCK(inp); 998 SCTP_ASOC_CREATE_UNLOCK(inp); 999 return EINVAL; 1000 } 1001 } 1002 #endif /* INET */ 1003 1004 /* Now do we connect? */ 1005 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 1006 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1007 if (stcb) { 1008 SCTP_TCB_UNLOCK (stcb); 1009 } 1010 SCTP_INP_RUNLOCK(inp); 1011 } else { 1012 SCTP_INP_RUNLOCK(inp); 1013 SCTP_INP_WLOCK(inp); 1014 SCTP_INP_INCR_REF(inp); 1015 SCTP_INP_WUNLOCK(inp); 1016 stcb = sctp_findassociation_ep_addr(&inp, nam, NULL, NULL, NULL); 1017 if (stcb == NULL) { 1018 SCTP_INP_WLOCK(inp); 1019 SCTP_INP_DECR_REF(inp); 1020 SCTP_INP_WUNLOCK(inp); 1021 } 1022 } 1023 1024 if (stcb != NULL) { 1025 /* Already have or am bring up an association */ 1026 SCTP_ASOC_CREATE_UNLOCK(inp); 1027 SCTP_TCB_UNLOCK (stcb); 1028 return (EALREADY); 1029 } 1030 /* We are GOOD to go */ 1031 stcb = sctp_aloc_assoc(inp, nam, 1, &error, 0); 1032 SCTP_ASOC_CREATE_UNLOCK(inp); 1033 if (stcb == NULL) { 1034 /* Gak! no memory */ 1035 return (error); 1036 } 1037 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { 1038 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; 1039 /* Set the connected flag so we can queue data */ 1040 soisconnecting(so); 1041 } 1042 stcb->asoc.state = SCTP_STATE_COOKIE_WAIT; 1043 SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); 1044 sctp_send_initiate(inp, stcb); 1045 SCTP_TCB_UNLOCK (stcb); 1046 return error; 1047 } 1048 1049 static int 1050 sctp6_connect2(struct socket *so, struct socket *so2) 1051 { 1052 KASSERT(solocked(so)); 1053 1054 return EOPNOTSUPP; 1055 } 1056 1057 static int 1058 sctp6_getaddr(struct socket *so, struct sockaddr *nam) 1059 { 1060 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam; 1061 struct sctp_inpcb *inp; 1062 int error; 1063 1064 /* 1065 * Do the malloc first in case it blocks. 1066 */ 1067 memset(sin6, 0, sizeof(*sin6)); 1068 sin6->sin6_family = AF_INET6; 1069 sin6->sin6_len = sizeof(*sin6); 1070 1071 inp = (struct sctp_inpcb *)so->so_pcb; 1072 if (inp == NULL) { 1073 return ECONNRESET; 1074 } 1075 1076 sin6->sin6_port = inp->sctp_lport; 1077 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 1078 /* For the bound all case you get back 0 */ 1079 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 1080 struct sctp_tcb *stcb; 1081 const struct sockaddr_in6 *sin_a6; 1082 struct sctp_nets *net; 1083 int fnd; 1084 1085 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1086 if (stcb == NULL) { 1087 goto notConn6; 1088 } 1089 fnd = 0; 1090 sin_a6 = NULL; 1091 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1092 sin_a6 = (const struct sockaddr_in6 *)rtcache_getdst(&net->ro); 1093 if (sin_a6->sin6_family == AF_INET6) { 1094 fnd = 1; 1095 break; 1096 } 1097 } 1098 if ((!fnd) || (sin_a6 == NULL)) { 1099 /* punt */ 1100 goto notConn6; 1101 } 1102 sin6->sin6_addr = sctp_ipv6_source_address_selection( 1103 inp, stcb, &net->ro, net, 0); 1104 1105 } else { 1106 /* For the bound all case you get back 0 */ 1107 notConn6: 1108 memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr)); 1109 } 1110 } else { 1111 /* Take the first IPv6 address in the list */ 1112 struct sctp_laddr *laddr; 1113 int fnd = 0; 1114 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 1115 if (laddr->ifa->ifa_addr->sa_family == AF_INET6) { 1116 struct sockaddr_in6 *sin_a; 1117 sin_a = (struct sockaddr_in6 *)laddr->ifa->ifa_addr; 1118 sin6->sin6_addr = sin_a->sin6_addr; 1119 fnd = 1; 1120 break; 1121 } 1122 } 1123 if (!fnd) { 1124 return ENOENT; 1125 } 1126 } 1127 /* Scoping things for v6 */ 1128 if ((error = sa6_recoverscope(sin6)) != 0) 1129 return (error); 1130 1131 return (0); 1132 } 1133 1134 static int 1135 sctp6_peeraddr(struct socket *so, struct sockaddr *nam) 1136 { 1137 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam; 1138 int fnd, error; 1139 const struct sockaddr_in6 *sin_a6; 1140 struct sctp_inpcb *inp; 1141 struct sctp_tcb *stcb; 1142 struct sctp_nets *net; 1143 /* 1144 * Do the malloc first in case it blocks. 1145 */ 1146 inp = (struct sctp_inpcb *)so->so_pcb; 1147 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) { 1148 /* UDP type and listeners will drop out here */ 1149 return (ENOTCONN); 1150 } 1151 memset(sin6, 0, sizeof(*sin6)); 1152 sin6->sin6_family = AF_INET6; 1153 sin6->sin6_len = sizeof(*sin6); 1154 1155 /* We must recapture incase we blocked */ 1156 inp = (struct sctp_inpcb *)so->so_pcb; 1157 if (inp == NULL) { 1158 return ECONNRESET; 1159 } 1160 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1161 if (stcb == NULL) { 1162 return ECONNRESET; 1163 } 1164 fnd = 0; 1165 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1166 sin_a6 = (const struct sockaddr_in6 *)rtcache_getdst(&net->ro); 1167 if (sin_a6->sin6_family == AF_INET6) { 1168 fnd = 1; 1169 sin6->sin6_port = stcb->rport; 1170 sin6->sin6_addr = sin_a6->sin6_addr; 1171 break; 1172 } 1173 } 1174 if (!fnd) { 1175 /* No IPv4 address */ 1176 return ENOENT; 1177 } 1178 if ((error = sa6_recoverscope(sin6)) != 0) 1179 return (error); 1180 1181 return (0); 1182 } 1183 1184 static int 1185 sctp6_sockaddr(struct socket *so, struct sockaddr *nam) 1186 { 1187 struct in6pcb *inp6 = sotoin6pcb(so); 1188 int error; 1189 1190 if (inp6 == NULL) 1191 return EINVAL; 1192 1193 /* allow v6 addresses precedence */ 1194 error = sctp6_getaddr(so, nam); 1195 if (error) { 1196 /* try v4 next if v6 failed */ 1197 error = sctp_sockaddr(so, nam); 1198 if (error) { 1199 return (error); 1200 } 1201 1202 /* if I'm V6ONLY, convert it to v4-mapped */ 1203 if (inp6->in6p_flags & IN6P_IPV6_V6ONLY) { 1204 struct sockaddr_in6 sin6; 1205 in6_sin_2_v4mapsin6((struct sockaddr_in *)nam, &sin6); 1206 memcpy(nam, &sin6, sizeof(struct sockaddr_in6)); 1207 } 1208 } 1209 return (error); 1210 } 1211 1212 #if 0 1213 static int 1214 sctp6_getpeeraddr(struct socket *so, struct sockaddr *nam) 1215 { 1216 struct in6pcb *inp6 = sotoin6pcb(so); 1217 int error; 1218 1219 if (inp6 == NULL) 1220 return EINVAL; 1221 1222 /* allow v6 addresses precedence */ 1223 error = sctp6_peeraddr(so, nam); 1224 if (error) { 1225 /* try v4 next if v6 failed */ 1226 error = sctp_peeraddr(so, nam); 1227 if (error) { 1228 return (error); 1229 } 1230 /* if I'm V6ONLY, convert it to v4-mapped */ 1231 if ((inp6->in6p_flags & IN6P_IPV6_V6ONLY)) { 1232 struct sockaddr_in6 sin6; 1233 in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6); 1234 memcpy(addr, &sin6, sizeof(struct sockaddr_in6)); 1235 } 1236 } 1237 return error; 1238 } 1239 #endif 1240 1241 static int 1242 sctp6_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp) 1243 { 1244 int error = 0; 1245 int family; 1246 1247 if (cmd == SIOCCONNECTX) { 1248 solock(so); 1249 error = sctp_do_connect_x(so, nam, curlwp, 0); 1250 sounlock(so); 1251 } else if (cmd == SIOCCONNECTXDEL) { 1252 solock(so); 1253 error = sctp_do_connect_x(so, nam, curlwp, 1); 1254 sounlock(so); 1255 } else { 1256 family = so->so_proto->pr_domain->dom_family; 1257 switch (family) { 1258 #ifdef INET 1259 case PF_INET: 1260 error = in_control(so, cmd, nam, ifp); 1261 break; 1262 #endif 1263 #ifdef INET6 1264 case PF_INET6: 1265 error = in6_control(so, cmd, nam, ifp); 1266 break; 1267 #endif 1268 default: 1269 error = EAFNOSUPPORT; 1270 } 1271 } 1272 return (error); 1273 } 1274 1275 static int 1276 sctp6_accept(struct socket *so, struct sockaddr *nam) 1277 { 1278 return sctp_accept(so, nam); 1279 } 1280 1281 static int 1282 sctp6_stat(struct socket *so, struct stat *ub) 1283 { 1284 return 0; 1285 } 1286 1287 static int 1288 sctp6_listen(struct socket *so, struct lwp *l) 1289 { 1290 return sctp_listen(so, l); 1291 } 1292 1293 static int 1294 sctp6_shutdown(struct socket *so) 1295 { 1296 return sctp_shutdown(so); 1297 } 1298 1299 static int 1300 sctp6_rcvd(struct socket *so, int flags, struct lwp *l) 1301 { 1302 KASSERT(solocked(so)); 1303 1304 return sctp_rcvd(so, flags, l); 1305 } 1306 1307 static int 1308 sctp6_purgeif(struct socket *so, struct ifnet *ifp) 1309 { 1310 struct ifaddr *ifa; 1311 /* FIXME NOMPSAFE */ 1312 IFADDR_READER_FOREACH(ifa, ifp) { 1313 if (ifa->ifa_addr->sa_family == PF_INET6) { 1314 sctp_delete_ip_address(ifa); 1315 } 1316 } 1317 1318 #ifndef NET_MPSAFE 1319 mutex_enter(softnet_lock); 1320 #endif 1321 in6_purgeif(ifp); 1322 #ifndef NET_MPSAFE 1323 mutex_exit(softnet_lock); 1324 #endif 1325 1326 return 0; 1327 } 1328 1329 PR_WRAP_USRREQS(sctp6) 1330 #define sctp6_attach sctp6_attach_wrapper 1331 #define sctp6_detach sctp6_detach_wrapper 1332 #define sctp6_accept sctp6_accept_wrapper 1333 #define sctp6_bind sctp6_bind_wrapper 1334 #define sctp6_listen sctp6_listen_wrapper 1335 #define sctp6_connect sctp6_connect_wrapper 1336 #define sctp6_connect2 sctp6_connect2_wrapper 1337 #define sctp6_disconnect sctp6_disconnect_wrapper 1338 #define sctp6_shutdown sctp6_shutdown_wrapper 1339 #define sctp6_abort sctp6_abort_wrapper 1340 #define sctp6_ioctl sctp6_ioctl_wrapper 1341 #define sctp6_stat sctp6_stat_wrapper 1342 #define sctp6_peeraddr sctp6_peeraddr_wrapper 1343 #define sctp6_sockaddr sctp6_sockaddr_wrapper 1344 #define sctp6_rcvd sctp6_rcvd_wrapper 1345 #define sctp6_recvoob sctp6_recvoob_wrapper 1346 #define sctp6_send sctp6_send_wrapper 1347 #define sctp6_sendoob sctp6_sendoob_wrapper 1348 #define sctp6_purgeif sctp6_purgeif_wrapper 1349 1350 const struct pr_usrreqs sctp6_usrreqs = { 1351 .pr_attach = sctp6_attach, 1352 .pr_detach = sctp6_detach, 1353 .pr_accept = sctp6_accept, 1354 .pr_bind = sctp6_bind, 1355 .pr_listen = sctp6_listen, 1356 .pr_connect = sctp6_connect, 1357 .pr_connect2 = sctp6_connect2, 1358 .pr_disconnect = sctp6_disconnect, 1359 .pr_shutdown = sctp6_shutdown, 1360 .pr_abort = sctp6_abort, 1361 .pr_ioctl = sctp6_ioctl, 1362 .pr_stat = sctp6_stat, 1363 .pr_peeraddr = sctp6_peeraddr, 1364 .pr_sockaddr = sctp6_sockaddr, 1365 .pr_rcvd = sctp6_rcvd, 1366 .pr_recvoob = sctp6_recvoob, 1367 .pr_send = sctp6_send, 1368 .pr_sendoob = sctp6_sendoob, 1369 .pr_purgeif = sctp6_purgeif, 1370 }; 1371