1 /*- 2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. 3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved. 4 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions are met: 8 * 9 * a) Redistributions of source code must retain the above copyright notice, 10 * this list of conditions and the following disclaimer. 11 * 12 * b) Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in 14 * the documentation and/or other materials provided with the distribution. 15 * 16 * c) Neither the name of Cisco Systems, Inc. nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 30 * THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #ifdef __FreeBSD__ 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD: head/sys/netinet6/sctp6_usrreq.c 271221 2014-09-07 09:06:26Z tuexen $"); 36 #endif 37 38 #include <netinet/sctp_os.h> 39 #ifdef INET6 40 #ifdef __FreeBSD__ 41 #include <sys/proc.h> 42 #endif 43 #include <netinet/sctp_pcb.h> 44 #include <netinet/sctp_header.h> 45 #include <netinet/sctp_var.h> 46 #ifdef INET6 47 #include <netinet6/sctp6_var.h> 48 #endif 49 #include <netinet/sctp_sysctl.h> 50 #include <netinet/sctp_output.h> 51 #include <netinet/sctp_uio.h> 52 #include <netinet/sctp_asconf.h> 53 #include <netinet/sctputil.h> 54 #include <netinet/sctp_indata.h> 55 #include <netinet/sctp_timer.h> 56 #include <netinet/sctp_auth.h> 57 #include <netinet/sctp_input.h> 58 #include <netinet/sctp_output.h> 59 #include <netinet/sctp_bsd_addr.h> 60 #include <netinet/sctp_crc32.h> 61 #if !defined(__Userspace_os_Windows) 62 #include <netinet/udp.h> 63 #endif 64 65 #if defined(__APPLE__) 66 #define APPLE_FILE_NO 9 67 #endif 68 #ifdef IPSEC 69 #include <netipsec/ipsec.h> 70 #ifdef INET6 71 #include <netipsec/ipsec6.h> 72 #endif /* INET6 */ 73 #endif /* IPSEC */ 74 75 #if !defined(__Userspace__) 76 extern struct protosw inetsw[]; 77 #endif 78 #if defined(__Panda__) || defined(__Userspace__) 79 int ip6_v6only=0; 80 #endif 81 #if defined(__Userspace__) 82 void 83 in6_sin6_2_sin(struct sockaddr_in *sin, struct sockaddr_in6 *sin6) 84 { 85 #if defined(__Userspace_os_Windows) 86 uint32_t temp; 87 #endif 88 bzero(sin, sizeof(*sin)); 89 #ifdef HAVE_SIN_LEN 90 sin->sin_len = sizeof(struct sockaddr_in); 91 #endif 92 sin->sin_family = AF_INET; 93 sin->sin_port = sin6->sin6_port; 94 #if defined(__Userspace_os_Windows) 95 temp = sin6->sin6_addr.s6_addr16[7]; 96 temp = temp << 16; 97 temp = temp | sin6->sin6_addr.s6_addr16[6]; 98 sin->sin_addr.s_addr = temp; 99 sctp_print_address((struct sockaddr*)sin); 100 #else 101 sin->sin_addr.s_addr = sin6->sin6_addr.s6_addr32[3]; 102 #endif 103 } 104 105 void 106 in6_sin6_2_sin_in_sock(struct sockaddr *nam) 107 { 108 struct sockaddr_in *sin_p; 109 struct sockaddr_in6 sin6; 110 111 /* save original sockaddr_in6 addr and convert it to sockaddr_in */ 112 sin6 = *(struct sockaddr_in6 *)nam; 113 sin_p = (struct sockaddr_in *)nam; 114 in6_sin6_2_sin(sin_p, &sin6); 115 } 116 #endif 117 118 #if !defined(__Userspace__) 119 int 120 #if defined(__APPLE__) || defined(__FreeBSD__) 121 sctp6_input_with_port(struct mbuf **i_pak, int *offp, uint16_t port) 122 #elif defined( __Panda__) 123 sctp6_input(pakhandle_type *i_pak) 124 #else 125 sctp6_input(struct mbuf **i_pak, int *offp, int proto) 126 #endif 127 { 128 struct mbuf *m; 129 int iphlen; 130 uint32_t vrf_id; 131 uint8_t ecn_bits; 132 struct sockaddr_in6 src, dst; 133 struct ip6_hdr *ip6; 134 struct sctphdr *sh; 135 struct sctp_chunkhdr *ch; 136 int length, offset; 137 #if !defined(SCTP_WITH_NO_CSUM) 138 uint8_t compute_crc; 139 #endif 140 #if defined(__FreeBSD__) 141 uint32_t mflowid; 142 uint8_t use_mflowid; 143 #endif 144 #if !(defined(__APPLE__) || defined (__FreeBSD__)) 145 uint16_t port = 0; 146 #endif 147 148 #if defined(__Panda__) 149 /* This is Evil, but its the only way to make panda work right. */ 150 iphlen = sizeof(struct ip6_hdr); 151 #else 152 iphlen = *offp; 153 #endif 154 if (SCTP_GET_PKT_VRFID(*i_pak, vrf_id)) { 155 SCTP_RELEASE_PKT(*i_pak); 156 return (IPPROTO_DONE); 157 } 158 m = SCTP_HEADER_TO_CHAIN(*i_pak); 159 #ifdef __Panda__ 160 SCTP_DETACH_HEADER_FROM_CHAIN(*i_pak); 161 (void)SCTP_RELEASE_HEADER(*i_pak); 162 #endif 163 #ifdef SCTP_MBUF_LOGGING 164 /* Log in any input mbufs */ 165 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) { 166 struct mbuf *mat; 167 168 for (mat = m; mat; mat = SCTP_BUF_NEXT(mat)) { 169 if (SCTP_BUF_IS_EXTENDED(mat)) { 170 sctp_log_mb(mat, SCTP_MBUF_INPUT); 171 } 172 } 173 } 174 #endif 175 #ifdef SCTP_PACKET_LOGGING 176 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_LAST_PACKET_TRACING) { 177 sctp_packet_log(m); 178 } 179 #endif 180 #if defined(__FreeBSD__) 181 #if __FreeBSD_version > 1000049 182 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD, 183 "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%b.\n", 184 m->m_pkthdr.len, 185 if_name(m->m_pkthdr.rcvif), 186 (int)m->m_pkthdr.csum_flags, CSUM_BITS); 187 #elif __FreeBSD_version >= 800000 188 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD, 189 "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%x.\n", 190 m->m_pkthdr.len, 191 if_name(m->m_pkthdr.rcvif), 192 m->m_pkthdr.csum_flags); 193 #else 194 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD, 195 "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%x.\n", 196 m->m_pkthdr.len, 197 m->m_pkthdr.rcvif->if_xname, 198 m->m_pkthdr.csum_flags); 199 #endif 200 #endif 201 #if defined(__APPLE__) 202 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD, 203 "sctp6_input(): Packet of length %d received on %s%d with csum_flags 0x%x.\n", 204 m->m_pkthdr.len, 205 m->m_pkthdr.rcvif->if_name, 206 m->m_pkthdr.rcvif->if_unit, 207 m->m_pkthdr.csum_flags); 208 #endif 209 #if defined(__Windows__) 210 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD, 211 "sctp6_input(): Packet of length %d received on %s with csum_flags 0x%x.\n", 212 m->m_pkthdr.len, 213 m->m_pkthdr.rcvif->if_xname, 214 m->m_pkthdr.csum_flags); 215 #endif 216 #if defined(__FreeBSD__) 217 if (m->m_flags & M_FLOWID) { 218 mflowid = m->m_pkthdr.flowid; 219 use_mflowid = 1; 220 } else { 221 mflowid = 0; 222 use_mflowid = 0; 223 } 224 #endif 225 SCTP_STAT_INCR(sctps_recvpackets); 226 SCTP_STAT_INCR_COUNTER64(sctps_inpackets); 227 /* Get IP, SCTP, and first chunk header together in the first mbuf. */ 228 offset = iphlen + sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr); 229 ip6 = mtod(m, struct ip6_hdr *); 230 IP6_EXTHDR_GET(sh, struct sctphdr *, m, iphlen, 231 (int)(sizeof(struct sctphdr) + sizeof(struct sctp_chunkhdr))); 232 if (sh == NULL) { 233 SCTP_STAT_INCR(sctps_hdrops); 234 return (IPPROTO_DONE); 235 } 236 ch = (struct sctp_chunkhdr *)((caddr_t)sh + sizeof(struct sctphdr)); 237 offset -= sizeof(struct sctp_chunkhdr); 238 memset(&src, 0, sizeof(struct sockaddr_in6)); 239 src.sin6_family = AF_INET6; 240 #ifdef HAVE_SIN6_LEN 241 src.sin6_len = sizeof(struct sockaddr_in6); 242 #endif 243 src.sin6_port = sh->src_port; 244 src.sin6_addr = ip6->ip6_src; 245 #if defined(__FreeBSD__) 246 #if defined(__APPLE__) 247 /* XXX: This code should also be used on Apple */ 248 #endif 249 if (in6_setscope(&src.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) { 250 goto out; 251 } 252 #endif 253 memset(&dst, 0, sizeof(struct sockaddr_in6)); 254 dst.sin6_family = AF_INET6; 255 #ifdef HAVE_SIN6_LEN 256 dst.sin6_len = sizeof(struct sockaddr_in6); 257 #endif 258 dst.sin6_port = sh->dest_port; 259 dst.sin6_addr = ip6->ip6_dst; 260 #if defined(__FreeBSD__) 261 #if defined(__APPLE__) 262 /* XXX: This code should also be used on Apple */ 263 #endif 264 if (in6_setscope(&dst.sin6_addr, m->m_pkthdr.rcvif, NULL) != 0) { 265 goto out; 266 } 267 #endif 268 #ifdef __FreeBSD__ 269 if (faithprefix_p != NULL && (*faithprefix_p) (&dst.sin6_addr)) { 270 /* XXX send icmp6 host/port unreach? */ 271 goto out; 272 } 273 #endif 274 #if defined(__APPLE__) 275 #if defined(NFAITH) && 0 < NFAITH 276 if (faithprefix(&dst.sin6_addr)) { 277 goto out; 278 } 279 #endif 280 #endif 281 length = ntohs(ip6->ip6_plen) + iphlen; 282 /* Validate mbuf chain length with IP payload length. */ 283 if (SCTP_HEADER_LEN(m) != length) { 284 SCTPDBG(SCTP_DEBUG_INPUT1, 285 "sctp6_input() length:%d reported length:%d\n", length, SCTP_HEADER_LEN(m)); 286 SCTP_STAT_INCR(sctps_hdrops); 287 goto out; 288 } 289 if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) { 290 goto out; 291 } 292 ecn_bits = ((ntohl(ip6->ip6_flow) >> 20) & 0x000000ff); 293 #if defined(SCTP_WITH_NO_CSUM) 294 SCTP_STAT_INCR(sctps_recvnocrc); 295 #else 296 #if defined(__FreeBSD__) && __FreeBSD_version >= 800000 297 if (m->m_pkthdr.csum_flags & CSUM_SCTP_VALID) { 298 SCTP_STAT_INCR(sctps_recvhwcrc); 299 compute_crc = 0; 300 } else { 301 #else 302 if (SCTP_BASE_SYSCTL(sctp_no_csum_on_loopback) && 303 (IN6_ARE_ADDR_EQUAL(&src.sin6_addr, &dst.sin6_addr))) { 304 SCTP_STAT_INCR(sctps_recvnocrc); 305 compute_crc = 0; 306 } else { 307 #endif 308 SCTP_STAT_INCR(sctps_recvswcrc); 309 compute_crc = 1; 310 } 311 #endif 312 sctp_common_input_processing(&m, iphlen, offset, length, 313 (struct sockaddr *)&src, 314 (struct sockaddr *)&dst, 315 sh, ch, 316 #if !defined(SCTP_WITH_NO_CSUM) 317 compute_crc, 318 #endif 319 ecn_bits, 320 #if defined(__FreeBSD__) 321 use_mflowid, mflowid, 322 #endif 323 vrf_id, port); 324 out: 325 if (m) { 326 sctp_m_freem(m); 327 } 328 return (IPPROTO_DONE); 329 } 330 331 #if defined(__APPLE__) 332 int 333 sctp6_input(struct mbuf **i_pak, int *offp) 334 { 335 return (sctp6_input_with_port(i_pak, offp, 0)); 336 } 337 #endif 338 339 #if defined(__FreeBSD__) 340 int 341 sctp6_input(struct mbuf **i_pak, int *offp, int proto SCTP_UNUSED) 342 { 343 return (sctp6_input_with_port(i_pak, offp, 0)); 344 } 345 #endif 346 347 #if defined(__Panda__) 348 void 349 #else 350 static void 351 #endif 352 sctp6_notify_mbuf(struct sctp_inpcb *inp, struct icmp6_hdr *icmp6, 353 struct sctphdr *sh, struct sctp_tcb *stcb, struct sctp_nets *net) 354 { 355 uint32_t nxtsz; 356 357 if ((inp == NULL) || (stcb == NULL) || (net == NULL) || 358 (icmp6 == NULL) || (sh == NULL)) { 359 goto out; 360 } 361 /* First do we even look at it? */ 362 if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) 363 goto out; 364 365 if (icmp6->icmp6_type != ICMP6_PACKET_TOO_BIG) { 366 /* not PACKET TO BIG */ 367 goto out; 368 } 369 /* 370 * ok we need to look closely. We could even get smarter and look at 371 * anyone that we sent to in case we get a different ICMP that tells 372 * us there is no way to reach a host, but for this impl, all we 373 * care about is MTU discovery. 374 */ 375 nxtsz = ntohl(icmp6->icmp6_mtu); 376 /* Stop any PMTU timer */ 377 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL, SCTP_FROM_SCTP6_USRREQ+SCTP_LOC_1); 378 379 /* Adjust destination size limit */ 380 if (net->mtu > nxtsz) { 381 net->mtu = nxtsz; 382 if (net->port) { 383 net->mtu -= sizeof(struct udphdr); 384 } 385 } 386 /* now what about the ep? */ 387 if (stcb->asoc.smallest_mtu > nxtsz) { 388 struct sctp_tmit_chunk *chk; 389 390 /* Adjust that too */ 391 stcb->asoc.smallest_mtu = nxtsz; 392 /* now off to subtract IP_DF flag if needed */ 393 394 TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) { 395 if ((uint32_t) (chk->send_size + IP_HDR_SIZE) > nxtsz) { 396 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 397 } 398 } 399 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { 400 if ((uint32_t) (chk->send_size + IP_HDR_SIZE) > nxtsz) { 401 /* 402 * For this guy we also mark for immediate 403 * resend since we sent to big of chunk 404 */ 405 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 406 if (chk->sent != SCTP_DATAGRAM_RESEND) 407 stcb->asoc.sent_queue_retran_cnt++; 408 chk->sent = SCTP_DATAGRAM_RESEND; 409 chk->rec.data.doing_fast_retransmit = 0; 410 411 chk->sent = SCTP_DATAGRAM_RESEND; 412 /* Clear any time so NO RTT is being done */ 413 chk->sent_rcv_time.tv_sec = 0; 414 chk->sent_rcv_time.tv_usec = 0; 415 stcb->asoc.total_flight -= chk->send_size; 416 net->flight_size -= chk->send_size; 417 } 418 } 419 } 420 sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL); 421 out: 422 if (stcb) { 423 SCTP_TCB_UNLOCK(stcb); 424 } 425 } 426 #endif 427 428 429 void 430 sctp6_notify(struct sctp_inpcb *inp, 431 struct icmp6_hdr *icmph, 432 struct sctphdr *sh, 433 struct sockaddr *to, 434 struct sctp_tcb *stcb, 435 struct sctp_nets *net) 436 { 437 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 438 struct socket *so; 439 440 #endif 441 442 /* protection */ 443 if ((inp == NULL) || (stcb == NULL) || (net == NULL) || 444 (sh == NULL) || (to == NULL)) { 445 if (stcb) 446 SCTP_TCB_UNLOCK(stcb); 447 return; 448 } 449 /* First job is to verify the vtag matches what I would send */ 450 if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) { 451 SCTP_TCB_UNLOCK(stcb); 452 return; 453 } 454 if (icmph->icmp6_type != ICMP_UNREACH) { 455 /* We only care about unreachable */ 456 SCTP_TCB_UNLOCK(stcb); 457 return; 458 } 459 if ((icmph->icmp6_code == ICMP_UNREACH_NET) || 460 (icmph->icmp6_code == ICMP_UNREACH_HOST) || 461 (icmph->icmp6_code == ICMP_UNREACH_NET_UNKNOWN) || 462 (icmph->icmp6_code == ICMP_UNREACH_HOST_UNKNOWN) || 463 (icmph->icmp6_code == ICMP_UNREACH_ISOLATED) || 464 (icmph->icmp6_code == ICMP_UNREACH_NET_PROHIB) || 465 (icmph->icmp6_code == ICMP_UNREACH_HOST_PROHIB) || 466 #if defined(__Panda__) 467 (icmph->icmp6_code == ICMP_UNREACH_ADMIN)) { 468 #elif defined(__Userspace_os_NetBSD) 469 (icmph->icmp6_code == ICMP_UNREACH_ADMIN_PROHIBIT)) { 470 #else 471 (icmph->icmp6_code == ICMP_UNREACH_FILTER_PROHIB)) { 472 #endif 473 474 /* 475 * Hmm reachablity problems we must examine closely. If its 476 * not reachable, we may have lost a network. Or if there is 477 * NO protocol at the other end named SCTP. well we consider 478 * it a OOTB abort. 479 */ 480 if (net->dest_state & SCTP_ADDR_REACHABLE) { 481 /* Ok that destination is NOT reachable */ 482 net->dest_state &= ~SCTP_ADDR_REACHABLE; 483 net->dest_state &= ~SCTP_ADDR_PF; 484 sctp_ulp_notify(SCTP_NOTIFY_INTERFACE_DOWN, 485 stcb, 0, (void *)net, SCTP_SO_NOT_LOCKED); 486 } 487 SCTP_TCB_UNLOCK(stcb); 488 } else if ((icmph->icmp6_code == ICMP_UNREACH_PROTOCOL) || 489 (icmph->icmp6_code == ICMP_UNREACH_PORT)) { 490 /* 491 * Here the peer is either playing tricks on us, 492 * including an address that belongs to someone who 493 * does not support SCTP OR was a userland 494 * implementation that shutdown and now is dead. In 495 * either case treat it like a OOTB abort with no 496 * TCB 497 */ 498 sctp_abort_notification(stcb, 1, 0, NULL, SCTP_SO_NOT_LOCKED); 499 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 500 so = SCTP_INP_SO(inp); 501 atomic_add_int(&stcb->asoc.refcnt, 1); 502 SCTP_TCB_UNLOCK(stcb); 503 SCTP_SOCKET_LOCK(so, 1); 504 SCTP_TCB_LOCK(stcb); 505 atomic_subtract_int(&stcb->asoc.refcnt, 1); 506 #endif 507 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ+SCTP_LOC_2); 508 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING) 509 SCTP_SOCKET_UNLOCK(so, 1); 510 /* SCTP_TCB_UNLOCK(stcb); MT: I think this is not needed.*/ 511 #endif 512 /* no need to unlock here, since the TCB is gone */ 513 } else { 514 SCTP_TCB_UNLOCK(stcb); 515 } 516 } 517 518 519 520 #if !defined(__Panda__) && !defined(__Userspace__) 521 void 522 sctp6_ctlinput(int cmd, struct sockaddr *pktdst, void *d) 523 { 524 struct sctphdr sh; 525 struct ip6ctlparam *ip6cp = NULL; 526 uint32_t vrf_id; 527 528 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) 529 vrf_id = SCTP_DEFAULT_VRFID; 530 #endif 531 532 #ifdef HAVE_SA_LEN 533 if (pktdst->sa_family != AF_INET6 || 534 pktdst->sa_len != sizeof(struct sockaddr_in6)) 535 #else 536 if (pktdst->sa_family != AF_INET6) 537 #endif 538 return; 539 540 if ((unsigned)cmd >= PRC_NCMDS) 541 return; 542 if (PRC_IS_REDIRECT(cmd)) { 543 d = NULL; 544 } else if (inet6ctlerrmap[cmd] == 0) { 545 return; 546 } 547 /* if the parameter is from icmp6, decode it. */ 548 if (d != NULL) { 549 ip6cp = (struct ip6ctlparam *)d; 550 } else { 551 ip6cp = (struct ip6ctlparam *)NULL; 552 } 553 554 if (ip6cp) { 555 /* 556 * XXX: We assume that when IPV6 is non NULL, M and OFF are 557 * valid. 558 */ 559 /* check if we can safely examine src and dst ports */ 560 struct sctp_inpcb *inp = NULL; 561 struct sctp_tcb *stcb = NULL; 562 struct sctp_nets *net = NULL; 563 struct sockaddr_in6 final; 564 565 if (ip6cp->ip6c_m == NULL) 566 return; 567 568 bzero(&sh, sizeof(sh)); 569 bzero(&final, sizeof(final)); 570 inp = NULL; 571 net = NULL; 572 m_copydata(ip6cp->ip6c_m, ip6cp->ip6c_off, sizeof(sh), 573 (caddr_t)&sh); 574 ip6cp->ip6c_src->sin6_port = sh.src_port; 575 #ifdef HAVE_SIN6_LEN 576 final.sin6_len = sizeof(final); 577 #endif 578 final.sin6_family = AF_INET6; 579 #if defined(__FreeBSD__) && __FreeBSD_cc_version < 440000 580 final.sin6_addr = *ip6cp->ip6c_finaldst; 581 #else 582 final.sin6_addr = ((struct sockaddr_in6 *)pktdst)->sin6_addr; 583 #endif /* __FreeBSD_cc_version */ 584 final.sin6_port = sh.dest_port; 585 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&final, 586 (struct sockaddr *)ip6cp->ip6c_src, 587 &inp, &net, 1, vrf_id); 588 /* inp's ref-count increased && stcb locked */ 589 if (stcb != NULL && inp && (inp->sctp_socket != NULL)) { 590 if (cmd == PRC_MSGSIZE) { 591 sctp6_notify_mbuf(inp, 592 ip6cp->ip6c_icmp6, 593 &sh, 594 stcb, 595 net); 596 /* inp's ref-count reduced && stcb unlocked */ 597 } else { 598 sctp6_notify(inp, ip6cp->ip6c_icmp6, &sh, 599 (struct sockaddr *)&final, 600 stcb, net); 601 /* inp's ref-count reduced && stcb unlocked */ 602 } 603 } else { 604 #if !defined(__Windows__) 605 if (PRC_IS_REDIRECT(cmd) && inp) { 606 in6_rtchange((struct in6pcb *)inp, 607 inet6ctlerrmap[cmd]); 608 } 609 #endif 610 if (inp) { 611 /* reduce inp's ref-count */ 612 SCTP_INP_WLOCK(inp); 613 SCTP_INP_DECR_REF(inp); 614 SCTP_INP_WUNLOCK(inp); 615 } 616 if (stcb) 617 SCTP_TCB_UNLOCK(stcb); 618 } 619 } 620 } 621 #endif 622 623 /* 624 * this routine can probably be collasped into the one in sctp_userreq.c 625 * since they do the same thing and now we lookup with a sockaddr 626 */ 627 #ifdef __FreeBSD__ 628 static int 629 sctp6_getcred(SYSCTL_HANDLER_ARGS) 630 { 631 struct xucred xuc; 632 struct sockaddr_in6 addrs[2]; 633 struct sctp_inpcb *inp; 634 struct sctp_nets *net; 635 struct sctp_tcb *stcb; 636 int error; 637 uint32_t vrf_id; 638 639 #if defined(__FreeBSD__) || defined(__APPLE__) 640 vrf_id = SCTP_DEFAULT_VRFID; 641 #else 642 vrf_id = panda_get_vrf_from_call(); /* from connectx call? */ 643 #endif 644 645 #if defined(__FreeBSD__) && __FreeBSD_version > 602000 646 error = priv_check(req->td, PRIV_NETINET_GETCRED); 647 #elif defined(__FreeBSD__) && __FreeBSD_version >= 500000 648 error = suser(req->td); 649 #else 650 error = suser(req->p); 651 #endif 652 if (error) 653 return (error); 654 655 if (req->newlen != sizeof(addrs)) { 656 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 657 return (EINVAL); 658 } 659 if (req->oldlen != sizeof(struct ucred)) { 660 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 661 return (EINVAL); 662 } 663 error = SYSCTL_IN(req, addrs, sizeof(addrs)); 664 if (error) 665 return (error); 666 667 stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[1]), 668 sin6tosa(&addrs[0]), 669 &inp, &net, 1, vrf_id); 670 if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) { 671 if ((inp != NULL) && (stcb == NULL)) { 672 /* reduce ref-count */ 673 SCTP_INP_WLOCK(inp); 674 SCTP_INP_DECR_REF(inp); 675 goto cred_can_cont; 676 } 677 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 678 error = ENOENT; 679 goto out; 680 } 681 SCTP_TCB_UNLOCK(stcb); 682 /* We use the write lock here, only 683 * since in the error leg we need it. 684 * If we used RLOCK, then we would have 685 * to wlock/decr/unlock/rlock. Which 686 * in theory could create a hole. Better 687 * to use higher wlock. 688 */ 689 SCTP_INP_WLOCK(inp); 690 cred_can_cont: 691 error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket); 692 if (error) { 693 SCTP_INP_WUNLOCK(inp); 694 goto out; 695 } 696 cru2x(inp->sctp_socket->so_cred, &xuc); 697 SCTP_INP_WUNLOCK(inp); 698 error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred)); 699 out: 700 return (error); 701 } 702 703 SYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW, 704 0, 0, 705 sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection"); 706 707 #endif 708 709 /* This is the same as the sctp_abort() could be made common */ 710 #if (defined(__FreeBSD__) && __FreeBSD_version > 690000) || defined(__Windows__) 711 static void 712 #elif defined(__Panda__) || defined(__Userspace__) 713 int 714 #else 715 static int 716 #endif 717 sctp6_abort(struct socket *so) 718 { 719 struct sctp_inpcb *inp; 720 uint32_t flags; 721 722 inp = (struct sctp_inpcb *)so->so_pcb; 723 if (inp == NULL) { 724 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 725 #if (defined(__FreeBSD__) && __FreeBSD_version > 690000) || defined(__Windows__) 726 return; 727 #else 728 return (EINVAL); 729 #endif 730 } 731 sctp_must_try_again: 732 flags = inp->sctp_flags; 733 #ifdef SCTP_LOG_CLOSING 734 sctp_log_closing(inp, NULL, 17); 735 #endif 736 if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) && 737 (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) { 738 #ifdef SCTP_LOG_CLOSING 739 sctp_log_closing(inp, NULL, 16); 740 #endif 741 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 742 SCTP_CALLED_AFTER_CMPSET_OFCLOSE); 743 SOCK_LOCK(so); 744 SCTP_SB_CLEAR(so->so_snd); 745 /* same for the rcv ones, they are only 746 * here for the accounting/select. 747 */ 748 SCTP_SB_CLEAR(so->so_rcv); 749 #if defined(__APPLE__) 750 so->so_usecount--; 751 #else 752 /* Now null out the reference, we are completely detached. */ 753 so->so_pcb = NULL; 754 #endif 755 SOCK_UNLOCK(so); 756 } else { 757 flags = inp->sctp_flags; 758 if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { 759 goto sctp_must_try_again; 760 } 761 } 762 #if (defined(__FreeBSD__) && __FreeBSD_version > 690000) || defined(__Windows__) 763 return; 764 #else 765 return (0); 766 #endif 767 } 768 769 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000 770 static int 771 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, struct thread *p SCTP_UNUSED) 772 #elif defined(__Panda__) || defined(__Userspace__) 773 int 774 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, uint32_t vrf_id) 775 #elif defined(__Windows__) 776 static int 777 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, PKTHREAD p SCTP_UNUSED) 778 #else 779 static int 780 sctp6_attach(struct socket *so, int proto SCTP_UNUSED, struct proc *p SCTP_UNUSED) 781 #endif 782 { 783 struct in6pcb *inp6; 784 int error; 785 struct sctp_inpcb *inp; 786 #if !defined(__Panda__) && !defined(__Userspace__) 787 uint32_t vrf_id = SCTP_DEFAULT_VRFID; 788 #endif 789 790 inp = (struct sctp_inpcb *)so->so_pcb; 791 if (inp != NULL) { 792 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 793 return (EINVAL); 794 } 795 796 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 797 error = SCTP_SORESERVE(so, SCTP_BASE_SYSCTL(sctp_sendspace), SCTP_BASE_SYSCTL(sctp_recvspace)); 798 if (error) 799 return (error); 800 } 801 error = sctp_inpcb_alloc(so, vrf_id); 802 if (error) 803 return (error); 804 inp = (struct sctp_inpcb *)so->so_pcb; 805 SCTP_INP_WLOCK(inp); 806 inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */ 807 inp6 = (struct in6pcb *)inp; 808 809 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__) 810 inp6->inp_vflag |= INP_IPV6; 811 #else 812 inp->inp_vflag |= INP_IPV6; 813 #endif 814 #if !defined(__Panda__) 815 inp6->in6p_hops = -1; /* use kernel default */ 816 inp6->in6p_cksum = -1; /* just to be sure */ 817 #endif 818 #ifdef INET 819 /* 820 * XXX: ugly!! IPv4 TTL initialization is necessary for an IPv6 821 * socket as well, because the socket may be bound to an IPv6 822 * wildcard address, which may match an IPv4-mapped IPv6 address. 823 */ 824 inp6->inp_ip_ttl = MODULE_GLOBAL(ip_defttl); 825 #endif 826 /* 827 * Hmm what about the IPSEC stuff that is missing here but in 828 * sctp_attach()? 829 */ 830 SCTP_INP_WUNLOCK(inp); 831 return (0); 832 } 833 834 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000 835 static int 836 sctp6_bind(struct socket *so, struct sockaddr *addr, struct thread *p) 837 { 838 #elif defined(__FreeBSD__) || defined(__APPLE__) 839 static int 840 sctp6_bind(struct socket *so, struct sockaddr *addr, struct proc *p) 841 { 842 #elif defined(__Panda__) || defined(__Userspace__) 843 int 844 sctp6_bind(struct socket *so, struct sockaddr *addr, void * p) 845 { 846 #elif defined(__Windows__) 847 static int 848 sctp6_bind(struct socket *so, struct sockaddr *addr, PKTHREAD p) 849 { 850 #else 851 static int 852 sctp6_bind(struct socket *so, struct mbuf *nam, struct proc *p) 853 { 854 struct sockaddr *addr = nam ? mtod(nam, struct sockaddr *): NULL; 855 856 #endif 857 struct sctp_inpcb *inp; 858 struct in6pcb *inp6; 859 int error; 860 861 inp = (struct sctp_inpcb *)so->so_pcb; 862 if (inp == NULL) { 863 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 864 return (EINVAL); 865 } 866 867 #if !defined(__Windows__) 868 if (addr) { 869 switch (addr->sa_family) { 870 #ifdef INET 871 case AF_INET: 872 #ifdef HAVE_SA_LEN 873 if (addr->sa_len != sizeof(struct sockaddr_in)) { 874 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 875 return (EINVAL); 876 } 877 #endif 878 break; 879 #endif 880 #ifdef INET6 881 case AF_INET6: 882 #ifdef HAVE_SA_LEN 883 if (addr->sa_len != sizeof(struct sockaddr_in6)) { 884 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 885 return (EINVAL); 886 } 887 #endif 888 break; 889 #endif 890 default: 891 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 892 return (EINVAL); 893 } 894 } 895 #endif 896 inp6 = (struct in6pcb *)inp; 897 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__) 898 inp6->inp_vflag &= ~INP_IPV4; 899 inp6->inp_vflag |= INP_IPV6; 900 #else 901 inp->inp_vflag &= ~INP_IPV4; 902 inp->inp_vflag |= INP_IPV6; 903 #endif 904 if ((addr != NULL) && (SCTP_IPV6_V6ONLY(inp6) == 0)) { 905 switch (addr->sa_family) { 906 #ifdef INET 907 case AF_INET: 908 /* binding v4 addr to v6 socket, so reset flags */ 909 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__) 910 inp6->inp_vflag |= INP_IPV4; 911 inp6->inp_vflag &= ~INP_IPV6; 912 #else 913 inp->inp_vflag |= INP_IPV4; 914 inp->inp_vflag &= ~INP_IPV6; 915 #endif 916 break; 917 #endif 918 #ifdef INET6 919 case AF_INET6: 920 { 921 struct sockaddr_in6 *sin6_p; 922 923 sin6_p = (struct sockaddr_in6 *)addr; 924 925 if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) { 926 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__) 927 inp6->inp_vflag |= INP_IPV4; 928 #else 929 inp->inp_vflag |= INP_IPV4; 930 #endif 931 } 932 #ifdef INET 933 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 934 struct sockaddr_in sin; 935 936 in6_sin6_2_sin(&sin, sin6_p); 937 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) || defined(__Userspace__) 938 inp6->inp_vflag |= INP_IPV4; 939 inp6->inp_vflag &= ~INP_IPV6; 940 #else 941 inp->inp_vflag |= INP_IPV4; 942 inp->inp_vflag &= ~INP_IPV6; 943 #endif 944 error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, NULL, p); 945 return (error); 946 } 947 #endif 948 break; 949 } 950 #endif 951 default: 952 break; 953 } 954 } else if (addr != NULL) { 955 struct sockaddr_in6 *sin6_p; 956 957 /* IPV6_V6ONLY socket */ 958 #ifdef INET 959 if (addr->sa_family == AF_INET) { 960 /* can't bind v4 addr to v6 only socket! */ 961 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 962 return (EINVAL); 963 } 964 #endif 965 sin6_p = (struct sockaddr_in6 *)addr; 966 967 if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 968 /* can't bind v4-mapped addrs either! */ 969 /* NOTE: we don't support SIIT */ 970 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 971 return (EINVAL); 972 } 973 } 974 error = sctp_inpcb_bind(so, addr, NULL, p); 975 return (error); 976 } 977 978 979 #if (defined(__FreeBSD__) && __FreeBSD_version > 690000) || defined(__Windows__) || defined(__Userspace__) 980 #if !defined(__Userspace__) 981 static void 982 #else 983 void 984 #endif 985 sctp6_close(struct socket *so) 986 { 987 sctp_close(so); 988 } 989 990 /* This could be made common with sctp_detach() since they are identical */ 991 #else 992 993 #if !defined(__Panda__) 994 static 995 #endif 996 int 997 sctp6_detach(struct socket *so) 998 { 999 #if defined(__Userspace__) 1000 sctp_close(so); 1001 return (0); 1002 #else 1003 return (sctp_detach(so)); 1004 #endif 1005 } 1006 1007 #endif 1008 1009 #if !defined(__Panda__) && !defined(__Userspace__) 1010 static 1011 #endif 1012 int 1013 sctp6_disconnect(struct socket *so) 1014 { 1015 return (sctp_disconnect(so)); 1016 } 1017 1018 1019 int 1020 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000 1021 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 1022 struct mbuf *control, struct thread *p); 1023 1024 #else 1025 sctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 1026 struct mbuf *control, struct proc *p); 1027 1028 #endif 1029 1030 #if !defined(__Panda__) && !defined(__Windows__) && !defined(__Userspace__) 1031 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000 1032 static int 1033 sctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 1034 struct mbuf *control, struct thread *p) 1035 { 1036 #elif defined(__FreeBSD__) || defined(__APPLE__) 1037 static int 1038 sctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 1039 struct mbuf *control, struct proc *p) 1040 { 1041 #else 1042 static int 1043 sctp6_send(struct socket *so, int flags, struct mbuf *m, struct mbuf *nam, 1044 struct mbuf *control, struct proc *p) 1045 { 1046 struct sockaddr *addr = nam ? mtod(nam, struct sockaddr *): NULL; 1047 #endif 1048 struct sctp_inpcb *inp; 1049 struct in6pcb *inp6; 1050 1051 #ifdef INET 1052 struct sockaddr_in6 *sin6; 1053 #endif /* INET */ 1054 /* No SPL needed since sctp_output does this */ 1055 1056 inp = (struct sctp_inpcb *)so->so_pcb; 1057 if (inp == NULL) { 1058 if (control) { 1059 SCTP_RELEASE_PKT(control); 1060 control = NULL; 1061 } 1062 SCTP_RELEASE_PKT(m); 1063 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1064 return (EINVAL); 1065 } 1066 inp6 = (struct in6pcb *)inp; 1067 /* 1068 * For the TCP model we may get a NULL addr, if we are a connected 1069 * socket thats ok. 1070 */ 1071 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) && 1072 (addr == NULL)) { 1073 goto connected_type; 1074 } 1075 if (addr == NULL) { 1076 SCTP_RELEASE_PKT(m); 1077 if (control) { 1078 SCTP_RELEASE_PKT(control); 1079 control = NULL; 1080 } 1081 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EDESTADDRREQ); 1082 return (EDESTADDRREQ); 1083 } 1084 #ifdef INET 1085 sin6 = (struct sockaddr_in6 *)addr; 1086 if (SCTP_IPV6_V6ONLY(inp6)) { 1087 /* 1088 * if IPV6_V6ONLY flag, we discard datagrams destined to a 1089 * v4 addr or v4-mapped addr 1090 */ 1091 if (addr->sa_family == AF_INET) { 1092 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1093 return (EINVAL); 1094 } 1095 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 1096 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1097 return (EINVAL); 1098 } 1099 } 1100 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 1101 struct sockaddr_in sin; 1102 1103 /* convert v4-mapped into v4 addr and send */ 1104 in6_sin6_2_sin(&sin, sin6); 1105 return (sctp_sendm(so, flags, m, (struct sockaddr *)&sin, control, p)); 1106 } 1107 #endif /* INET */ 1108 connected_type: 1109 /* now what about control */ 1110 if (control) { 1111 if (inp->control) { 1112 SCTP_PRINTF("huh? control set?\n"); 1113 SCTP_RELEASE_PKT(inp->control); 1114 inp->control = NULL; 1115 } 1116 inp->control = control; 1117 } 1118 /* Place the data */ 1119 if (inp->pkt) { 1120 SCTP_BUF_NEXT(inp->pkt_last) = m; 1121 inp->pkt_last = m; 1122 } else { 1123 inp->pkt_last = inp->pkt = m; 1124 } 1125 if ( 1126 #if defined(__FreeBSD__) || defined(__APPLE__) 1127 /* FreeBSD and MacOSX uses a flag passed */ 1128 ((flags & PRUS_MORETOCOME) == 0) 1129 #else 1130 1 /* Open BSD does not have any "more to come" 1131 * indication */ 1132 #endif 1133 ) { 1134 /* 1135 * note with the current version this code will only be used 1136 * by OpenBSD, NetBSD and FreeBSD have methods for 1137 * re-defining sosend() to use sctp_sosend(). One can 1138 * optionaly switch back to this code (by changing back the 1139 * defininitions but this is not advisable. 1140 */ 1141 int ret; 1142 1143 ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags); 1144 inp->pkt = NULL; 1145 inp->control = NULL; 1146 return (ret); 1147 } else { 1148 return (0); 1149 } 1150 } 1151 #endif 1152 1153 #if defined(__FreeBSD__) && __FreeBSD_version >= 500000 1154 static int 1155 sctp6_connect(struct socket *so, struct sockaddr *addr, struct thread *p) 1156 { 1157 #elif defined(__FreeBSD__) || defined(__APPLE__) 1158 static int 1159 sctp6_connect(struct socket *so, struct sockaddr *addr, struct proc *p) 1160 { 1161 #elif defined(__Panda__) 1162 int 1163 sctp6_connect(struct socket *so, struct sockaddr *addr, void *p) 1164 { 1165 #elif defined(__Windows__) 1166 static int 1167 sctp6_connect(struct socket *so, struct sockaddr *addr, PKTHREAD p) 1168 { 1169 #elif defined(__Userspace__) 1170 int 1171 sctp6_connect(struct socket *so, struct sockaddr *addr) 1172 { 1173 void *p = NULL; 1174 #else 1175 static int 1176 sctp6_connect(struct socket *so, struct mbuf *nam, struct proc *p) 1177 { 1178 struct sockaddr *addr = mtod(nam, struct sockaddr *); 1179 #endif 1180 uint32_t vrf_id; 1181 int error = 0; 1182 struct sctp_inpcb *inp; 1183 struct sctp_tcb *stcb; 1184 #ifdef INET 1185 struct in6pcb *inp6; 1186 struct sockaddr_in6 *sin6; 1187 union sctp_sockstore store; 1188 #endif 1189 1190 #ifdef INET 1191 inp6 = (struct in6pcb *)so->so_pcb; 1192 #endif 1193 inp = (struct sctp_inpcb *)so->so_pcb; 1194 if (inp == NULL) { 1195 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 1196 return (ECONNRESET); /* I made the same as TCP since we are 1197 * not setup? */ 1198 } 1199 if (addr == NULL) { 1200 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1201 return (EINVAL); 1202 } 1203 #if !defined(__Windows__) 1204 switch (addr->sa_family) { 1205 #ifdef INET 1206 case AF_INET: 1207 #ifdef HAVE_SA_LEN 1208 if (addr->sa_len != sizeof(struct sockaddr_in)) { 1209 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1210 return (EINVAL); 1211 } 1212 #endif 1213 break; 1214 #endif 1215 #ifdef INET6 1216 case AF_INET6: 1217 #ifdef HAVE_SA_LEN 1218 if (addr->sa_len != sizeof(struct sockaddr_in6)) { 1219 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1220 return (EINVAL); 1221 } 1222 #endif 1223 break; 1224 #endif 1225 default: 1226 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1227 return (EINVAL); 1228 } 1229 #endif 1230 1231 vrf_id = inp->def_vrf_id; 1232 SCTP_ASOC_CREATE_LOCK(inp); 1233 SCTP_INP_RLOCK(inp); 1234 if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 1235 SCTP_PCB_FLAGS_UNBOUND) { 1236 /* Bind a ephemeral port */ 1237 SCTP_INP_RUNLOCK(inp); 1238 error = sctp6_bind(so, NULL, p); 1239 if (error) { 1240 SCTP_ASOC_CREATE_UNLOCK(inp); 1241 1242 return (error); 1243 } 1244 SCTP_INP_RLOCK(inp); 1245 } 1246 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 1247 (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { 1248 /* We are already connected AND the TCP model */ 1249 SCTP_INP_RUNLOCK(inp); 1250 SCTP_ASOC_CREATE_UNLOCK(inp); 1251 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EADDRINUSE); 1252 return (EADDRINUSE); 1253 } 1254 #ifdef INET 1255 sin6 = (struct sockaddr_in6 *)addr; 1256 if (SCTP_IPV6_V6ONLY(inp6)) { 1257 /* 1258 * if IPV6_V6ONLY flag, ignore connections destined to a v4 1259 * addr or v4-mapped addr 1260 */ 1261 if (addr->sa_family == AF_INET) { 1262 SCTP_INP_RUNLOCK(inp); 1263 SCTP_ASOC_CREATE_UNLOCK(inp); 1264 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1265 return (EINVAL); 1266 } 1267 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 1268 SCTP_INP_RUNLOCK(inp); 1269 SCTP_ASOC_CREATE_UNLOCK(inp); 1270 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1271 return (EINVAL); 1272 } 1273 } 1274 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 1275 /* convert v4-mapped into v4 addr */ 1276 in6_sin6_2_sin(&store.sin, sin6); 1277 addr = &store.sa; 1278 } 1279 #endif /* INET */ 1280 /* Now do we connect? */ 1281 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 1282 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1283 if (stcb) { 1284 SCTP_TCB_UNLOCK(stcb); 1285 } 1286 SCTP_INP_RUNLOCK(inp); 1287 } else { 1288 SCTP_INP_RUNLOCK(inp); 1289 SCTP_INP_WLOCK(inp); 1290 SCTP_INP_INCR_REF(inp); 1291 SCTP_INP_WUNLOCK(inp); 1292 stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL); 1293 if (stcb == NULL) { 1294 SCTP_INP_WLOCK(inp); 1295 SCTP_INP_DECR_REF(inp); 1296 SCTP_INP_WUNLOCK(inp); 1297 } 1298 } 1299 1300 if (stcb != NULL) { 1301 /* Already have or am bring up an association */ 1302 SCTP_ASOC_CREATE_UNLOCK(inp); 1303 SCTP_TCB_UNLOCK(stcb); 1304 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EALREADY); 1305 return (EALREADY); 1306 } 1307 /* We are GOOD to go */ 1308 stcb = sctp_aloc_assoc(inp, addr, &error, 0, vrf_id, p); 1309 SCTP_ASOC_CREATE_UNLOCK(inp); 1310 if (stcb == NULL) { 1311 /* Gak! no memory */ 1312 return (error); 1313 } 1314 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { 1315 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; 1316 /* Set the connected flag so we can queue data */ 1317 soisconnecting(so); 1318 } 1319 stcb->asoc.state = SCTP_STATE_COOKIE_WAIT; 1320 (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); 1321 1322 /* initialize authentication parameters for the assoc */ 1323 sctp_initialize_auth_params(inp, stcb); 1324 1325 sctp_send_initiate(inp, stcb, SCTP_SO_LOCKED); 1326 SCTP_TCB_UNLOCK(stcb); 1327 return (error); 1328 } 1329 1330 static int 1331 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) 1332 sctp6_getaddr(struct socket *so, struct sockaddr **addr) 1333 { 1334 struct sockaddr_in6 *sin6; 1335 #elif defined(__Panda__) 1336 sctp6_getaddr(struct socket *so, struct sockaddr *addr) 1337 { 1338 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr; 1339 #else 1340 sctp6_getaddr(struct socket *so, struct mbuf *nam) 1341 { 1342 struct sockaddr_in6 *sin6 = mtod(nam, struct sockaddr_in6 *); 1343 #endif 1344 struct sctp_inpcb *inp; 1345 uint32_t vrf_id; 1346 struct sctp_ifa *sctp_ifa; 1347 1348 #ifdef SCTP_KAME 1349 int error; 1350 #endif /* SCTP_KAME */ 1351 1352 /* 1353 * Do the malloc first in case it blocks. 1354 */ 1355 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) 1356 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof(*sin6)); 1357 if (sin6 == NULL) 1358 return (ENOMEM); 1359 #elif defined(__Panda__) 1360 bzero(sin6, sizeof(*sin6)); 1361 #else 1362 SCTP_BUF_LEN(nam) = sizeof(*sin6); 1363 bzero(sin6, sizeof(*sin6)); 1364 #endif 1365 sin6->sin6_family = AF_INET6; 1366 #ifdef HAVE_SIN6_LEN 1367 sin6->sin6_len = sizeof(*sin6); 1368 #endif 1369 1370 inp = (struct sctp_inpcb *)so->so_pcb; 1371 if (inp == NULL) { 1372 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) 1373 SCTP_FREE_SONAME(sin6); 1374 #endif 1375 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 1376 return (ECONNRESET); 1377 } 1378 SCTP_INP_RLOCK(inp); 1379 sin6->sin6_port = inp->sctp_lport; 1380 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 1381 /* For the bound all case you get back 0 */ 1382 if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 1383 struct sctp_tcb *stcb; 1384 struct sockaddr_in6 *sin_a6; 1385 struct sctp_nets *net; 1386 int fnd; 1387 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1388 if (stcb == NULL) { 1389 goto notConn6; 1390 } 1391 fnd = 0; 1392 sin_a6 = NULL; 1393 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1394 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 1395 if (sin_a6 == NULL) 1396 /* this will make coverity happy */ 1397 continue; 1398 1399 if (sin_a6->sin6_family == AF_INET6) { 1400 fnd = 1; 1401 break; 1402 } 1403 } 1404 if ((!fnd) || (sin_a6 == NULL)) { 1405 /* punt */ 1406 goto notConn6; 1407 } 1408 vrf_id = inp->def_vrf_id; 1409 sctp_ifa = sctp_source_address_selection(inp, stcb, (sctp_route_t *)&net->ro, net, 0, vrf_id); 1410 if (sctp_ifa) { 1411 sin6->sin6_addr = sctp_ifa->address.sin6.sin6_addr; 1412 } 1413 } else { 1414 /* For the bound all case you get back 0 */ 1415 notConn6: 1416 memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr)); 1417 } 1418 } else { 1419 /* Take the first IPv6 address in the list */ 1420 struct sctp_laddr *laddr; 1421 int fnd = 0; 1422 1423 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 1424 if (laddr->ifa->address.sa.sa_family == AF_INET6) { 1425 struct sockaddr_in6 *sin_a; 1426 1427 sin_a = &laddr->ifa->address.sin6; 1428 sin6->sin6_addr = sin_a->sin6_addr; 1429 fnd = 1; 1430 break; 1431 } 1432 } 1433 if (!fnd) { 1434 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) 1435 SCTP_FREE_SONAME(sin6); 1436 #endif 1437 SCTP_INP_RUNLOCK(inp); 1438 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 1439 return (ENOENT); 1440 } 1441 } 1442 SCTP_INP_RUNLOCK(inp); 1443 /* Scoping things for v6 */ 1444 #ifdef SCTP_EMBEDDED_V6_SCOPE 1445 #ifdef SCTP_KAME 1446 if ((error = sa6_recoverscope(sin6)) != 0) { 1447 SCTP_FREE_SONAME(sin6); 1448 return (error); 1449 } 1450 #else 1451 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) 1452 /* skip ifp check below */ 1453 in6_recoverscope(sin6, &sin6->sin6_addr, NULL); 1454 else 1455 sin6->sin6_scope_id = 0; /* XXX */ 1456 #endif /* SCTP_KAME */ 1457 #endif /* SCTP_EMBEDDED_V6_SCOPE */ 1458 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) 1459 (*addr) = (struct sockaddr *)sin6; 1460 #endif 1461 return (0); 1462 } 1463 1464 static int 1465 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) 1466 sctp6_peeraddr(struct socket *so, struct sockaddr **addr) 1467 { 1468 struct sockaddr_in6 *sin6; 1469 #elif defined(__Panda__) 1470 sctp6_peeraddr(struct socket *so, struct sockaddr *addr) 1471 { 1472 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)addr; 1473 #else 1474 sctp6_peeraddr(struct socket *so, struct mbuf *nam) 1475 { 1476 struct sockaddr_in6 *sin6 = mtod(nam, struct sockaddr_in6 *); 1477 #endif 1478 int fnd; 1479 struct sockaddr_in6 *sin_a6; 1480 struct sctp_inpcb *inp; 1481 struct sctp_tcb *stcb; 1482 struct sctp_nets *net; 1483 #ifdef SCTP_KAME 1484 int error; 1485 #endif 1486 1487 /* Do the malloc first in case it blocks. */ 1488 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) 1489 SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1490 if (sin6 == NULL) 1491 return (ENOMEM); 1492 #elif defined(__Panda__) 1493 memset(sin6, 0, sizeof(*sin6)); 1494 #else 1495 SCTP_BUF_LEN(nam) = sizeof(*sin6); 1496 memset(sin6, 0, sizeof(*sin6)); 1497 #endif 1498 sin6->sin6_family = AF_INET6; 1499 #ifdef HAVE_SIN6_LEN 1500 sin6->sin6_len = sizeof(*sin6); 1501 #endif 1502 1503 inp = (struct sctp_inpcb *)so->so_pcb; 1504 if ((inp == NULL) || 1505 ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0)) { 1506 /* UDP type and listeners will drop out here */ 1507 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) 1508 SCTP_FREE_SONAME(sin6); 1509 #endif 1510 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOTCONN); 1511 return (ENOTCONN); 1512 } 1513 SCTP_INP_RLOCK(inp); 1514 stcb = LIST_FIRST(&inp->sctp_asoc_list); 1515 if (stcb) { 1516 SCTP_TCB_LOCK(stcb); 1517 } 1518 SCTP_INP_RUNLOCK(inp); 1519 if (stcb == NULL) { 1520 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) 1521 SCTP_FREE_SONAME(sin6); 1522 #endif 1523 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 1524 return (ECONNRESET); 1525 } 1526 fnd = 0; 1527 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1528 sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 1529 if (sin_a6->sin6_family == AF_INET6) { 1530 fnd = 1; 1531 sin6->sin6_port = stcb->rport; 1532 sin6->sin6_addr = sin_a6->sin6_addr; 1533 break; 1534 } 1535 } 1536 SCTP_TCB_UNLOCK(stcb); 1537 if (!fnd) { 1538 /* No IPv4 address */ 1539 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) 1540 SCTP_FREE_SONAME(sin6); 1541 #endif 1542 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 1543 return (ENOENT); 1544 } 1545 #ifdef SCTP_EMBEDDED_V6_SCOPE 1546 #ifdef SCTP_KAME 1547 if ((error = sa6_recoverscope(sin6)) != 0) 1548 return (error); 1549 #else 1550 in6_recoverscope(sin6, &sin6->sin6_addr, NULL); 1551 #endif /* SCTP_KAME */ 1552 #endif /* SCTP_EMBEDDED_V6_SCOPE */ 1553 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) 1554 *addr = (struct sockaddr *)sin6; 1555 #endif 1556 return (0); 1557 } 1558 1559 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) 1560 static int 1561 sctp6_in6getaddr(struct socket *so, struct sockaddr **nam) 1562 { 1563 #ifdef INET 1564 struct sockaddr *addr; 1565 #endif 1566 #elif defined(__Panda__) 1567 int 1568 sctp6_in6getaddr(struct socket *so, struct sockaddr *nam, uint32_t *namelen) 1569 { 1570 struct sockaddr *addr = nam; 1571 #elif defined(__Userspace__) 1572 int 1573 sctp6_in6getaddr(struct socket *so, struct mbuf *nam) 1574 { 1575 #ifdef INET 1576 struct sockaddr *addr = mtod(nam, struct sockaddr *); 1577 #endif 1578 #else 1579 static int 1580 sctp6_in6getaddr(struct socket *so, struct mbuf *nam) 1581 { 1582 #ifdef INET 1583 struct sockaddr *addr = mtod(nam, struct sockaddr *); 1584 #endif 1585 #endif 1586 struct in6pcb *inp6 = sotoin6pcb(so); 1587 int error; 1588 1589 if (inp6 == NULL) { 1590 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1591 return (EINVAL); 1592 } 1593 1594 /* allow v6 addresses precedence */ 1595 error = sctp6_getaddr(so, nam); 1596 #ifdef INET 1597 if (error) { 1598 /* try v4 next if v6 failed */ 1599 error = sctp_ingetaddr(so, nam); 1600 if (error) { 1601 return (error); 1602 } 1603 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) 1604 addr = *nam; 1605 #endif 1606 /* if I'm V6ONLY, convert it to v4-mapped */ 1607 if (SCTP_IPV6_V6ONLY(inp6)) { 1608 struct sockaddr_in6 sin6; 1609 1610 in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6); 1611 memcpy(addr, &sin6, sizeof(struct sockaddr_in6)); 1612 } 1613 } 1614 #endif 1615 #if defined(__Panda__) 1616 *namelen = nam->sa_len; 1617 #endif 1618 return (error); 1619 } 1620 1621 1622 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) 1623 static int 1624 sctp6_getpeeraddr(struct socket *so, struct sockaddr **nam) 1625 { 1626 #ifdef INET 1627 struct sockaddr *addr; 1628 #endif 1629 #elif defined(__Panda__) 1630 int 1631 sctp6_getpeeraddr(struct socket *so, struct sockaddr *nam, uint32_t *namelen) 1632 { 1633 struct sockaddr *addr = (struct sockaddr *)nam; 1634 #elif defined(__Userspace__) 1635 int 1636 sctp6_getpeeraddr(struct socket *so, struct mbuf *nam) 1637 { 1638 #ifdef INET 1639 struct sockaddr *addr = mtod(nam, struct sockaddr *); 1640 #endif 1641 #else 1642 static 1643 int 1644 sctp6_getpeeraddr(struct socket *so, struct mbuf *nam) 1645 { 1646 #ifdef INET 1647 struct sockaddr *addr = mtod(nam, struct sockaddr *); 1648 #endif 1649 1650 #endif 1651 struct in6pcb *inp6 = sotoin6pcb(so); 1652 int error; 1653 1654 if (inp6 == NULL) { 1655 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1656 return (EINVAL); 1657 } 1658 1659 /* allow v6 addresses precedence */ 1660 error = sctp6_peeraddr(so, nam); 1661 #ifdef INET 1662 if (error) { 1663 /* try v4 next if v6 failed */ 1664 error = sctp_peeraddr(so, nam); 1665 if (error) { 1666 return (error); 1667 } 1668 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) 1669 addr = *nam; 1670 #endif 1671 /* if I'm V6ONLY, convert it to v4-mapped */ 1672 if (SCTP_IPV6_V6ONLY(inp6)) { 1673 struct sockaddr_in6 sin6; 1674 1675 in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6); 1676 memcpy(addr, &sin6, sizeof(struct sockaddr_in6)); 1677 } 1678 } 1679 #endif 1680 #if defined(__Panda__) 1681 *namelen = nam->sa_len; 1682 #endif 1683 return (error); 1684 } 1685 1686 #if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Windows__) 1687 struct pr_usrreqs sctp6_usrreqs = { 1688 #if defined(__FreeBSD__) 1689 .pru_abort = sctp6_abort, 1690 .pru_accept = sctp_accept, 1691 .pru_attach = sctp6_attach, 1692 .pru_bind = sctp6_bind, 1693 .pru_connect = sctp6_connect, 1694 .pru_control = in6_control, 1695 #if __FreeBSD_version >= 690000 1696 .pru_close = sctp6_close, 1697 .pru_detach = sctp6_close, 1698 .pru_sopoll = sopoll_generic, 1699 .pru_flush = sctp_flush, 1700 #else 1701 .pru_detach = sctp6_detach, 1702 .pru_sopoll = sopoll, 1703 #endif 1704 .pru_disconnect = sctp6_disconnect, 1705 .pru_listen = sctp_listen, 1706 .pru_peeraddr = sctp6_getpeeraddr, 1707 .pru_send = sctp6_send, 1708 .pru_shutdown = sctp_shutdown, 1709 .pru_sockaddr = sctp6_in6getaddr, 1710 .pru_sosend = sctp_sosend, 1711 .pru_soreceive = sctp_soreceive 1712 #elif defined(__APPLE__) 1713 .pru_abort = sctp6_abort, 1714 .pru_accept = sctp_accept, 1715 .pru_attach = sctp6_attach, 1716 .pru_bind = sctp6_bind, 1717 .pru_connect = sctp6_connect, 1718 .pru_connect2 = pru_connect2_notsupp, 1719 .pru_control = in6_control, 1720 .pru_detach = sctp6_detach, 1721 .pru_disconnect = sctp6_disconnect, 1722 .pru_listen = sctp_listen, 1723 .pru_peeraddr = sctp6_getpeeraddr, 1724 .pru_rcvd = NULL, 1725 .pru_rcvoob = pru_rcvoob_notsupp, 1726 .pru_send = sctp6_send, 1727 .pru_sense = pru_sense_null, 1728 .pru_shutdown = sctp_shutdown, 1729 .pru_sockaddr = sctp6_in6getaddr, 1730 .pru_sosend = sctp_sosend, 1731 .pru_soreceive = sctp_soreceive, 1732 .pru_sopoll = sopoll 1733 #elif defined(__Windows__) 1734 sctp6_abort, 1735 sctp_accept, 1736 sctp6_attach, 1737 sctp6_bind, 1738 sctp6_connect, 1739 pru_connect2_notsupp, 1740 NULL, 1741 NULL, 1742 sctp6_disconnect, 1743 sctp_listen, 1744 sctp6_getpeeraddr, 1745 NULL, 1746 pru_rcvoob_notsupp, 1747 NULL, 1748 pru_sense_null, 1749 sctp_shutdown, 1750 sctp_flush, 1751 sctp6_in6getaddr, 1752 sctp_sosend, 1753 sctp_soreceive, 1754 sopoll_generic, 1755 NULL, 1756 sctp6_close 1757 #endif 1758 }; 1759 1760 #elif !defined(__Panda__) && !defined(__Userspace__) 1761 int 1762 sctp6_usrreq(so, req, m, nam, control, p) 1763 struct socket *so; 1764 int req; 1765 struct mbuf *m, *nam, *control; 1766 struct proc *p; 1767 { 1768 int s; 1769 int error = 0; 1770 int family; 1771 uint32_t vrf_id; 1772 family = so->so_proto->pr_domain->dom_family; 1773 1774 if (req == PRU_CONTROL) { 1775 switch (family) { 1776 case PF_INET: 1777 error = in_control(so, (long)m, (caddr_t)nam, 1778 (struct ifnet *)control 1779 ); 1780 #ifdef INET6 1781 case PF_INET6: 1782 error = in6_control(so, (long)m, (caddr_t)nam, 1783 (struct ifnet *)control, p); 1784 #endif 1785 default: 1786 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EAFNOSUPPORT); 1787 error = EAFNOSUPPORT; 1788 } 1789 return (error); 1790 } 1791 switch (req) { 1792 case PRU_ATTACH: 1793 error = sctp6_attach(so, family, p); 1794 break; 1795 case PRU_DETACH: 1796 error = sctp6_detach(so); 1797 break; 1798 case PRU_BIND: 1799 if (nam == NULL) { 1800 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1801 return (EINVAL); 1802 } 1803 error = sctp6_bind(so, nam, p); 1804 break; 1805 case PRU_LISTEN: 1806 error = sctp_listen(so, p); 1807 break; 1808 case PRU_CONNECT: 1809 if (nam == NULL) { 1810 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1811 return (EINVAL); 1812 } 1813 error = sctp6_connect(so, nam, p); 1814 break; 1815 case PRU_DISCONNECT: 1816 error = sctp6_disconnect(so); 1817 break; 1818 case PRU_ACCEPT: 1819 if (nam == NULL) { 1820 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1821 return (EINVAL); 1822 } 1823 error = sctp_accept(so, nam); 1824 break; 1825 case PRU_SHUTDOWN: 1826 error = sctp_shutdown(so); 1827 break; 1828 1829 case PRU_RCVD: 1830 /* 1831 * For OpenBSD and NetBSD, this is real ugly. The (mbuf *) 1832 * nam that is passed (by soreceive()) is the int flags cast 1833 * as a (mbuf *) yuck! 1834 */ 1835 error = sctp_usr_recvd(so, (int)((long)nam)); 1836 break; 1837 1838 case PRU_SEND: 1839 /* Flags are ignored */ 1840 error = sctp6_send(so, 0, m, nam, control, p); 1841 break; 1842 case PRU_ABORT: 1843 error = sctp6_abort(so); 1844 break; 1845 1846 case PRU_SENSE: 1847 error = 0; 1848 break; 1849 case PRU_RCVOOB: 1850 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EAFNOSUPPORT); 1851 error = EAFNOSUPPORT; 1852 break; 1853 case PRU_SENDOOB: 1854 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EAFNOSUPPORT); 1855 error = EAFNOSUPPORT; 1856 break; 1857 case PRU_PEERADDR: 1858 error = sctp6_getpeeraddr(so, nam); 1859 break; 1860 case PRU_SOCKADDR: 1861 error = sctp6_in6getaddr(so, nam); 1862 break; 1863 case PRU_SLOWTIMO: 1864 error = 0; 1865 break; 1866 default: 1867 break; 1868 } 1869 return (error); 1870 } 1871 #endif 1872 #endif 1873
