sctp6_usrreq.c revision 171943
1163953Srrs/*- 2169382Srrs * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved. 3163953Srrs * 4163953Srrs * Redistribution and use in source and binary forms, with or without 5163953Srrs * modification, are permitted provided that the following conditions are met: 6163953Srrs * 7163953Srrs * a) Redistributions of source code must retain the above copyright notice, 8163953Srrs * this list of conditions and the following disclaimer. 9163953Srrs * 10163953Srrs * b) Redistributions in binary form must reproduce the above copyright 11163953Srrs * notice, this list of conditions and the following disclaimer in 12163953Srrs * the documentation and/or other materials provided with the distribution. 13163953Srrs * 14163953Srrs * c) Neither the name of Cisco Systems, Inc. nor the names of its 15163953Srrs * contributors may be used to endorse or promote products derived 16163953Srrs * from this software without specific prior written permission. 17163953Srrs * 18163953Srrs * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19163953Srrs * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 20163953Srrs * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21163953Srrs * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 22163953Srrs * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 23163953Srrs * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 24163953Srrs * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 25163953Srrs * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 26163953Srrs * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 27163953Srrs * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 28163953Srrs * THE POSSIBILITY OF SUCH DAMAGE. 29163953Srrs */ 30163953Srrs/* $KAME: sctp6_usrreq.c,v 1.38 2005/08/24 08:08:56 suz Exp $ */ 31163954Srrs#include <sys/cdefs.h> 32163953Srrs__FBSDID("$FreeBSD: head/sys/netinet6/sctp6_usrreq.c 171943 2007-08-24 00:53:53Z rrs $"); 33163953Srrs 34168709Srrs 35166086Srrs#include <netinet/sctp_os.h> 36163953Srrs#include <sys/proc.h> 37163953Srrs#include <netinet/sctp_pcb.h> 38163953Srrs#include <netinet/sctp_header.h> 39163953Srrs#include <netinet/sctp_var.h> 40168709Srrs#if defined(INET6) 41168709Srrs#include <netinet6/sctp6_var.h> 42168709Srrs#endif 43167598Srrs#include <netinet/sctp_sysctl.h> 44163953Srrs#include <netinet/sctp_output.h> 45166086Srrs#include <netinet/sctp_uio.h> 46163953Srrs#include <netinet/sctp_asconf.h> 47166086Srrs#include <netinet/sctputil.h> 48166086Srrs#include <netinet/sctp_indata.h> 49166086Srrs#include <netinet/sctp_timer.h> 50166086Srrs#include <netinet/sctp_auth.h> 51168709Srrs#include <netinet/sctp_input.h> 52168709Srrs#include <netinet/sctp_output.h> 53170091Srrs#include <netinet/sctp_bsd_addr.h> 54163953Srrs 55171167Sgnn#ifdef IPSEC 56171133Sgnn#include <netipsec/ipsec.h> 57171133Sgnn#if defined(INET6) 58171133Sgnn#include <netipsec/ipsec6.h> 59171440Srrs#endif /* INET6 */ 60171440Srrs#endif /* IPSEC */ 61163953Srrs 62163953Srrsextern struct protosw inetsw[]; 63163953Srrs 64163953Srrsint 65171259Sdelphijsctp6_input(struct mbuf **i_pak, int *offp, int proto) 66163953Srrs{ 67165647Srrs struct mbuf *m; 68163953Srrs struct ip6_hdr *ip6; 69163953Srrs struct sctphdr *sh; 70163953Srrs struct sctp_inpcb *in6p = NULL; 71163953Srrs struct sctp_nets *net; 72163953Srrs int refcount_up = 0; 73169352Srrs uint32_t check, calc_check; 74170181Srrs uint32_t vrf_id = 0; 75163953Srrs struct inpcb *in6p_ip; 76163953Srrs struct sctp_chunkhdr *ch; 77163953Srrs int length, mlen, offset, iphlen; 78168299Srrs uint8_t ecn_bits; 79163953Srrs struct sctp_tcb *stcb = NULL; 80170056Srrs int pkt_len = 0; 81163953Srrs int off = *offp; 82163953Srrs 83169352Srrs /* get the VRF and table id's */ 84169352Srrs if (SCTP_GET_PKT_VRFID(*i_pak, vrf_id)) { 85169352Srrs SCTP_RELEASE_PKT(*i_pak); 86169352Srrs return (-1); 87169352Srrs } 88168709Srrs m = SCTP_HEADER_TO_CHAIN(*i_pak); 89170056Srrs pkt_len = SCTP_HEADER_LEN((*i_pak)); 90165647Srrs 91170091Srrs#ifdef SCTP_PACKET_LOGGING 92170091Srrs sctp_packet_log(m, pkt_len); 93170091Srrs#endif 94163953Srrs ip6 = mtod(m, struct ip6_hdr *); 95163953Srrs /* Ensure that (sctphdr + sctp_chunkhdr) in a row. */ 96170056Srrs IP6_EXTHDR_GET(sh, struct sctphdr *, m, off, 97170056Srrs (int)(sizeof(*sh) + sizeof(*ch))); 98163953Srrs if (sh == NULL) { 99163953Srrs SCTP_STAT_INCR(sctps_hdrops); 100163953Srrs return IPPROTO_DONE; 101163953Srrs } 102163953Srrs ch = (struct sctp_chunkhdr *)((caddr_t)sh + sizeof(struct sctphdr)); 103163953Srrs iphlen = off; 104163953Srrs offset = iphlen + sizeof(*sh) + sizeof(*ch); 105170859Srrs SCTPDBG(SCTP_DEBUG_INPUT1, 106170859Srrs "sctp6_input() length:%d iphlen:%d\n", pkt_len, iphlen); 107163953Srrs 108170859Srrs 109163953Srrs#if defined(NFAITH) && NFAITH > 0 110163953Srrs 111163953Srrs if (faithprefix_p != NULL && (*faithprefix_p) (&ip6->ip6_dst)) { 112163953Srrs /* XXX send icmp6 host/port unreach? */ 113163953Srrs goto bad; 114163953Srrs } 115163953Srrs#endif /* NFAITH defined and > 0 */ 116163953Srrs SCTP_STAT_INCR(sctps_recvpackets); 117163953Srrs SCTP_STAT_INCR_COUNTER64(sctps_inpackets); 118169420Srrs SCTPDBG(SCTP_DEBUG_INPUT1, "V6 input gets a packet iphlen:%d pktlen:%d\n", 119170056Srrs iphlen, pkt_len); 120163953Srrs if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst)) { 121163953Srrs /* No multi-cast support in SCTP */ 122163953Srrs goto bad; 123163953Srrs } 124163953Srrs /* destination port of 0 is illegal, based on RFC2960. */ 125163953Srrs if (sh->dest_port == 0) 126163953Srrs goto bad; 127163953Srrs if ((sctp_no_csum_on_loopback == 0) || 128165647Srrs (!SCTP_IS_IT_LOOPBACK(m))) { 129163953Srrs /* 130163953Srrs * we do NOT validate things from the loopback if the sysctl 131163953Srrs * is set to 1. 132163953Srrs */ 133163953Srrs check = sh->checksum; /* save incoming checksum */ 134163953Srrs if ((check == 0) && (sctp_no_csum_on_loopback)) { 135163953Srrs /* 136163953Srrs * special hook for where we got a local address 137163953Srrs * somehow routed across a non IFT_LOOP type 138163953Srrs * interface 139163953Srrs */ 140163953Srrs if (IN6_ARE_ADDR_EQUAL(&ip6->ip6_src, &ip6->ip6_dst)) 141163953Srrs goto sctp_skip_csum; 142163953Srrs } 143163953Srrs sh->checksum = 0; /* prepare for calc */ 144163953Srrs calc_check = sctp_calculate_sum(m, &mlen, iphlen); 145163953Srrs if (calc_check != check) { 146169420Srrs SCTPDBG(SCTP_DEBUG_INPUT1, "Bad CSUM on SCTP packet calc_check:%x check:%x m:%p mlen:%d iphlen:%d\n", 147169420Srrs calc_check, check, m, mlen, iphlen); 148163953Srrs stcb = sctp_findassociation_addr(m, iphlen, offset - sizeof(*ch), 149168299Srrs sh, ch, &in6p, &net, vrf_id); 150163953Srrs /* in6p's ref-count increased && stcb locked */ 151163953Srrs if ((in6p) && (stcb)) { 152163953Srrs sctp_send_packet_dropped(stcb, net, m, iphlen, 1); 153163953Srrs sctp_chunk_output((struct sctp_inpcb *)in6p, stcb, 2); 154163953Srrs } else if ((in6p != NULL) && (stcb == NULL)) { 155163953Srrs refcount_up = 1; 156163953Srrs } 157163953Srrs SCTP_STAT_INCR(sctps_badsum); 158163953Srrs SCTP_STAT_INCR_COUNTER32(sctps_checksumerrors); 159163953Srrs goto bad; 160163953Srrs } 161163953Srrs sh->checksum = calc_check; 162165647Srrs } 163163953Srrssctp_skip_csum: 164163953Srrs net = NULL; 165163953Srrs /* 166163953Srrs * Locate pcb and tcb for datagram sctp_findassociation_addr() wants 167163953Srrs * IP/SCTP/first chunk header... 168163953Srrs */ 169163953Srrs stcb = sctp_findassociation_addr(m, iphlen, offset - sizeof(*ch), 170168299Srrs sh, ch, &in6p, &net, vrf_id); 171163953Srrs /* in6p's ref-count increased */ 172163953Srrs if (in6p == NULL) { 173163953Srrs struct sctp_init_chunk *init_chk, chunk_buf; 174163953Srrs 175163953Srrs SCTP_STAT_INCR(sctps_noport); 176163953Srrs if (ch->chunk_type == SCTP_INITIATION) { 177163953Srrs /* 178163953Srrs * we do a trick here to get the INIT tag, dig in 179163953Srrs * and get the tag from the INIT and put it in the 180163953Srrs * common header. 181163953Srrs */ 182163953Srrs init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m, 183163953Srrs iphlen + sizeof(*sh), sizeof(*init_chk), 184168299Srrs (uint8_t *) & chunk_buf); 185169420Srrs if (init_chk) 186169420Srrs sh->v_tag = init_chk->init.initiate_tag; 187169420Srrs else 188169420Srrs sh->v_tag = 0; 189163953Srrs } 190165220Srrs if (ch->chunk_type == SCTP_SHUTDOWN_ACK) { 191170181Srrs sctp_send_shutdown_complete2(m, iphlen, sh, vrf_id); 192165220Srrs goto bad; 193165220Srrs } 194165220Srrs if (ch->chunk_type == SCTP_SHUTDOWN_COMPLETE) { 195165220Srrs goto bad; 196165220Srrs } 197165220Srrs if (ch->chunk_type != SCTP_ABORT_ASSOCIATION) 198170181Srrs sctp_send_abort(m, iphlen, sh, 0, NULL, vrf_id); 199163953Srrs goto bad; 200163953Srrs } else if (stcb == NULL) { 201163953Srrs refcount_up = 1; 202163953Srrs } 203163953Srrs in6p_ip = (struct inpcb *)in6p; 204171167Sgnn#ifdef IPSEC 205163953Srrs /* 206163953Srrs * Check AH/ESP integrity. 207163953Srrs */ 208163996Srrs if (in6p_ip && (ipsec6_in_reject(m, in6p_ip))) { 209163953Srrs/* XXX */ 210163953Srrs ipsec6stat.in_polvio++; 211163953Srrs goto bad; 212163996Srrs } 213171440Srrs#endif /* IPSEC */ 214163953Srrs 215163953Srrs /* 216163953Srrs * CONTROL chunk processing 217163953Srrs */ 218163953Srrs offset -= sizeof(*ch); 219163953Srrs ecn_bits = ((ntohl(ip6->ip6_flow) >> 20) & 0x000000ff); 220165647Srrs 221165647Srrs /* Length now holds the total packet length payload + iphlen */ 222165647Srrs length = ntohs(ip6->ip6_plen) + iphlen; 223165647Srrs 224169655Srrs /* sa_ignore NO_NULL_CHK */ 225169378Srrs sctp_common_input_processing(&m, iphlen, offset, length, sh, ch, 226170181Srrs in6p, stcb, net, ecn_bits, vrf_id); 227163953Srrs /* inp's ref-count reduced && stcb unlocked */ 228163953Srrs /* XXX this stuff below gets moved to appropriate parts later... */ 229163953Srrs if (m) 230169352Srrs sctp_m_freem(m); 231163953Srrs if ((in6p) && refcount_up) { 232163953Srrs /* reduce ref-count */ 233163953Srrs SCTP_INP_WLOCK(in6p); 234163953Srrs SCTP_INP_DECR_REF(in6p); 235163953Srrs SCTP_INP_WUNLOCK(in6p); 236163953Srrs } 237163953Srrs return IPPROTO_DONE; 238163953Srrs 239163953Srrsbad: 240169420Srrs if (stcb) { 241163953Srrs SCTP_TCB_UNLOCK(stcb); 242169420Srrs } 243163953Srrs if ((in6p) && refcount_up) { 244163953Srrs /* reduce ref-count */ 245163953Srrs SCTP_INP_WLOCK(in6p); 246163953Srrs SCTP_INP_DECR_REF(in6p); 247163953Srrs SCTP_INP_WUNLOCK(in6p); 248163953Srrs } 249163953Srrs if (m) 250169352Srrs sctp_m_freem(m); 251163953Srrs return IPPROTO_DONE; 252163953Srrs} 253163953Srrs 254163953Srrs 255163953Srrsstatic void 256171259Sdelphijsctp6_notify_mbuf(struct sctp_inpcb *inp, struct icmp6_hdr *icmp6, 257171259Sdelphij struct sctphdr *sh, struct sctp_tcb *stcb, struct sctp_nets *net) 258163953Srrs{ 259168299Srrs uint32_t nxtsz; 260163953Srrs 261163953Srrs if ((inp == NULL) || (stcb == NULL) || (net == NULL) || 262163953Srrs (icmp6 == NULL) || (sh == NULL)) { 263163953Srrs goto out; 264163953Srrs } 265163953Srrs /* First do we even look at it? */ 266163953Srrs if (ntohl(sh->v_tag) != (stcb->asoc.peer_vtag)) 267163953Srrs goto out; 268163953Srrs 269163953Srrs if (icmp6->icmp6_type != ICMP6_PACKET_TOO_BIG) { 270163953Srrs /* not PACKET TO BIG */ 271163953Srrs goto out; 272163953Srrs } 273163953Srrs /* 274163953Srrs * ok we need to look closely. We could even get smarter and look at 275163953Srrs * anyone that we sent to in case we get a different ICMP that tells 276163953Srrs * us there is no way to reach a host, but for this impl, all we 277163953Srrs * care about is MTU discovery. 278163953Srrs */ 279163953Srrs nxtsz = ntohl(icmp6->icmp6_mtu); 280163953Srrs /* Stop any PMTU timer */ 281165220Srrs sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL, SCTP_FROM_SCTP6_USRREQ + SCTP_LOC_1); 282163953Srrs 283163953Srrs /* Adjust destination size limit */ 284163953Srrs if (net->mtu > nxtsz) { 285163953Srrs net->mtu = nxtsz; 286163953Srrs } 287163953Srrs /* now what about the ep? */ 288163953Srrs if (stcb->asoc.smallest_mtu > nxtsz) { 289163953Srrs struct sctp_tmit_chunk *chk; 290163953Srrs 291163953Srrs /* Adjust that too */ 292163953Srrs stcb->asoc.smallest_mtu = nxtsz; 293163953Srrs /* now off to subtract IP_DF flag if needed */ 294163953Srrs 295163953Srrs TAILQ_FOREACH(chk, &stcb->asoc.send_queue, sctp_next) { 296168299Srrs if ((uint32_t) (chk->send_size + IP_HDR_SIZE) > nxtsz) { 297163953Srrs chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 298163953Srrs } 299163953Srrs } 300163953Srrs TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) { 301168299Srrs if ((uint32_t) (chk->send_size + IP_HDR_SIZE) > nxtsz) { 302163953Srrs /* 303163953Srrs * For this guy we also mark for immediate 304163953Srrs * resend since we sent to big of chunk 305163953Srrs */ 306163953Srrs chk->flags |= CHUNK_FLAGS_FRAGMENT_OK; 307163953Srrs if (chk->sent != SCTP_DATAGRAM_RESEND) 308163953Srrs stcb->asoc.sent_queue_retran_cnt++; 309163953Srrs chk->sent = SCTP_DATAGRAM_RESEND; 310163953Srrs chk->rec.data.doing_fast_retransmit = 0; 311163953Srrs 312163953Srrs chk->sent = SCTP_DATAGRAM_RESEND; 313163953Srrs /* Clear any time so NO RTT is being done */ 314163953Srrs chk->sent_rcv_time.tv_sec = 0; 315163953Srrs chk->sent_rcv_time.tv_usec = 0; 316163953Srrs stcb->asoc.total_flight -= chk->send_size; 317163953Srrs net->flight_size -= chk->send_size; 318163953Srrs } 319163953Srrs } 320163953Srrs } 321163953Srrs sctp_timer_start(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, NULL); 322163953Srrsout: 323169420Srrs if (stcb) { 324163953Srrs SCTP_TCB_UNLOCK(stcb); 325169420Srrs } 326163953Srrs} 327163953Srrs 328163953Srrs 329163953Srrsvoid 330171259Sdelphijsctp6_ctlinput(int cmd, struct sockaddr *pktdst, void *d) 331163953Srrs{ 332163953Srrs struct sctphdr sh; 333163953Srrs struct ip6ctlparam *ip6cp = NULL; 334167598Srrs uint32_t vrf_id; 335166086Srrs int cm; 336163953Srrs 337167598Srrs vrf_id = SCTP_DEFAULT_VRFID; 338167598Srrs 339163953Srrs if (pktdst->sa_family != AF_INET6 || 340163953Srrs pktdst->sa_len != sizeof(struct sockaddr_in6)) 341163953Srrs return; 342163953Srrs 343163953Srrs if ((unsigned)cmd >= PRC_NCMDS) 344163953Srrs return; 345163953Srrs if (PRC_IS_REDIRECT(cmd)) { 346163953Srrs d = NULL; 347163953Srrs } else if (inet6ctlerrmap[cmd] == 0) { 348163953Srrs return; 349163953Srrs } 350163953Srrs /* if the parameter is from icmp6, decode it. */ 351163953Srrs if (d != NULL) { 352163953Srrs ip6cp = (struct ip6ctlparam *)d; 353163953Srrs } else { 354163953Srrs ip6cp = (struct ip6ctlparam *)NULL; 355163953Srrs } 356163953Srrs 357163953Srrs if (ip6cp) { 358163953Srrs /* 359163953Srrs * XXX: We assume that when IPV6 is non NULL, M and OFF are 360163953Srrs * valid. 361163953Srrs */ 362163953Srrs /* check if we can safely examine src and dst ports */ 363163953Srrs struct sctp_inpcb *inp = NULL; 364163953Srrs struct sctp_tcb *stcb = NULL; 365163953Srrs struct sctp_nets *net = NULL; 366163953Srrs struct sockaddr_in6 final; 367163953Srrs 368165647Srrs if (ip6cp->ip6c_m == NULL) 369163953Srrs return; 370163953Srrs 371163953Srrs bzero(&sh, sizeof(sh)); 372163953Srrs bzero(&final, sizeof(final)); 373163953Srrs inp = NULL; 374163953Srrs net = NULL; 375163953Srrs m_copydata(ip6cp->ip6c_m, ip6cp->ip6c_off, sizeof(sh), 376163953Srrs (caddr_t)&sh); 377163953Srrs ip6cp->ip6c_src->sin6_port = sh.src_port; 378163953Srrs final.sin6_len = sizeof(final); 379163953Srrs final.sin6_family = AF_INET6; 380163953Srrs final.sin6_addr = ((struct sockaddr_in6 *)pktdst)->sin6_addr; 381163953Srrs final.sin6_port = sh.dest_port; 382163953Srrs stcb = sctp_findassociation_addr_sa((struct sockaddr *)ip6cp->ip6c_src, 383163953Srrs (struct sockaddr *)&final, 384167598Srrs &inp, &net, 1, vrf_id); 385163953Srrs /* inp's ref-count increased && stcb locked */ 386163953Srrs if (stcb != NULL && inp && (inp->sctp_socket != NULL)) { 387163953Srrs if (cmd == PRC_MSGSIZE) { 388163953Srrs sctp6_notify_mbuf(inp, 389163953Srrs ip6cp->ip6c_icmp6, 390163953Srrs &sh, 391163953Srrs stcb, 392163953Srrs net); 393163953Srrs /* inp's ref-count reduced && stcb unlocked */ 394163953Srrs } else { 395163953Srrs if (cmd == PRC_HOSTDEAD) { 396163953Srrs cm = EHOSTUNREACH; 397163953Srrs } else { 398163953Srrs cm = inet6ctlerrmap[cmd]; 399163953Srrs } 400163953Srrs sctp_notify(inp, cm, &sh, 401163953Srrs (struct sockaddr *)&final, 402163953Srrs stcb, net); 403163953Srrs /* inp's ref-count reduced && stcb unlocked */ 404163953Srrs } 405163953Srrs } else { 406163953Srrs if (PRC_IS_REDIRECT(cmd) && inp) { 407163953Srrs in6_rtchange((struct in6pcb *)inp, 408163953Srrs inet6ctlerrmap[cmd]); 409163953Srrs } 410163953Srrs if (inp) { 411163953Srrs /* reduce inp's ref-count */ 412163953Srrs SCTP_INP_WLOCK(inp); 413163953Srrs SCTP_INP_DECR_REF(inp); 414163953Srrs SCTP_INP_WUNLOCK(inp); 415163953Srrs } 416163953Srrs if (stcb) 417163953Srrs SCTP_TCB_UNLOCK(stcb); 418163953Srrs } 419163953Srrs } 420163953Srrs} 421163953Srrs 422163953Srrs/* 423163953Srrs * this routine can probably be collasped into the one in sctp_userreq.c 424163953Srrs * since they do the same thing and now we lookup with a sockaddr 425163953Srrs */ 426163953Srrsstatic int 427163953Srrssctp6_getcred(SYSCTL_HANDLER_ARGS) 428163953Srrs{ 429164085Srrs struct xucred xuc; 430163953Srrs struct sockaddr_in6 addrs[2]; 431163953Srrs struct sctp_inpcb *inp; 432163953Srrs struct sctp_nets *net; 433163953Srrs struct sctp_tcb *stcb; 434164085Srrs int error; 435167598Srrs uint32_t vrf_id; 436163953Srrs 437167598Srrs vrf_id = SCTP_DEFAULT_VRFID; 438167598Srrs 439170587Srwatson error = priv_check(req->td, PRIV_NETINET_GETCRED); 440163953Srrs if (error) 441163953Srrs return (error); 442163953Srrs 443171943Srrs if (req->newlen != sizeof(addrs)) { 444171943Srrs SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 445163953Srrs return (EINVAL); 446171943Srrs } 447171943Srrs if (req->oldlen != sizeof(struct ucred)) { 448171943Srrs SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 449163953Srrs return (EINVAL); 450171943Srrs } 451163953Srrs error = SYSCTL_IN(req, addrs, sizeof(addrs)); 452163953Srrs if (error) 453163953Srrs return (error); 454163953Srrs 455163953Srrs stcb = sctp_findassociation_addr_sa(sin6tosa(&addrs[0]), 456163953Srrs sin6tosa(&addrs[1]), 457167598Srrs &inp, &net, 1, vrf_id); 458163953Srrs if (stcb == NULL || inp == NULL || inp->sctp_socket == NULL) { 459164085Srrs if ((inp != NULL) && (stcb == NULL)) { 460164085Srrs /* reduce ref-count */ 461163953Srrs SCTP_INP_WLOCK(inp); 462163953Srrs SCTP_INP_DECR_REF(inp); 463164085Srrs goto cred_can_cont; 464163953Srrs } 465171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 466164085Srrs error = ENOENT; 467163953Srrs goto out; 468163953Srrs } 469163953Srrs SCTP_TCB_UNLOCK(stcb); 470164085Srrs /* 471164085Srrs * We use the write lock here, only since in the error leg we need 472164085Srrs * it. If we used RLOCK, then we would have to 473164085Srrs * wlock/decr/unlock/rlock. Which in theory could create a hole. 474164085Srrs * Better to use higher wlock. 475164085Srrs */ 476164085Srrs SCTP_INP_WLOCK(inp); 477164085Srrscred_can_cont: 478164085Srrs error = cr_canseesocket(req->td->td_ucred, inp->sctp_socket); 479164085Srrs if (error) { 480164085Srrs SCTP_INP_WUNLOCK(inp); 481164085Srrs goto out; 482164085Srrs } 483164085Srrs cru2x(inp->sctp_socket->so_cred, &xuc); 484164085Srrs SCTP_INP_WUNLOCK(inp); 485164085Srrs error = SYSCTL_OUT(req, &xuc, sizeof(struct xucred)); 486163953Srrsout: 487163953Srrs return (error); 488163953Srrs} 489163953Srrs 490163953SrrsSYSCTL_PROC(_net_inet6_sctp6, OID_AUTO, getcred, CTLTYPE_OPAQUE | CTLFLAG_RW, 491163953Srrs 0, 0, 492163953Srrs sctp6_getcred, "S,ucred", "Get the ucred of a SCTP6 connection"); 493163953Srrs 494163953Srrs 495163953Srrs/* This is the same as the sctp_abort() could be made common */ 496163953Srrsstatic void 497163953Srrssctp6_abort(struct socket *so) 498163953Srrs{ 499163953Srrs struct sctp_inpcb *inp; 500163953Srrs uint32_t flags; 501163953Srrs 502163953Srrs inp = (struct sctp_inpcb *)so->so_pcb; 503163953Srrs if (inp == 0) 504163953Srrs return; 505163953Srrssctp_must_try_again: 506163953Srrs flags = inp->sctp_flags; 507163953Srrs#ifdef SCTP_LOG_CLOSING 508163953Srrs sctp_log_closing(inp, NULL, 17); 509163953Srrs#endif 510163953Srrs if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) && 511163953Srrs (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) { 512163953Srrs#ifdef SCTP_LOG_CLOSING 513163953Srrs sctp_log_closing(inp, NULL, 16); 514163953Srrs#endif 515169380Srrs sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT, 516169380Srrs SCTP_CALLED_AFTER_CMPSET_OFCLOSE); 517163953Srrs SOCK_LOCK(so); 518167695Srrs SCTP_SB_CLEAR(so->so_snd); 519163953Srrs /* 520163953Srrs * same for the rcv ones, they are only here for the 521163953Srrs * accounting/select. 522163953Srrs */ 523167695Srrs SCTP_SB_CLEAR(so->so_rcv); 524167695Srrs /* Now null out the reference, we are completely detached. */ 525163953Srrs so->so_pcb = NULL; 526163953Srrs SOCK_UNLOCK(so); 527163953Srrs } else { 528163953Srrs flags = inp->sctp_flags; 529163953Srrs if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { 530163953Srrs goto sctp_must_try_again; 531163953Srrs } 532163953Srrs } 533163953Srrs return; 534163953Srrs} 535163953Srrs 536163953Srrsstatic int 537163953Srrssctp6_attach(struct socket *so, int proto, struct thread *p) 538163953Srrs{ 539163953Srrs struct in6pcb *inp6; 540166086Srrs int error; 541163953Srrs struct sctp_inpcb *inp; 542170205Srrs uint32_t vrf_id = SCTP_DEFAULT_VRFID; 543163953Srrs 544163953Srrs inp = (struct sctp_inpcb *)so->so_pcb; 545171943Srrs if (inp != NULL) { 546171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 547163953Srrs return EINVAL; 548171943Srrs } 549163953Srrs if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) { 550167695Srrs error = SCTP_SORESERVE(so, sctp_sendspace, sctp_recvspace); 551163953Srrs if (error) 552163953Srrs return error; 553163953Srrs } 554170205Srrs error = sctp_inpcb_alloc(so, vrf_id); 555163953Srrs if (error) 556163953Srrs return error; 557163953Srrs inp = (struct sctp_inpcb *)so->so_pcb; 558170205Srrs SCTP_INP_WLOCK(inp); 559163953Srrs inp->sctp_flags |= SCTP_PCB_FLAGS_BOUND_V6; /* I'm v6! */ 560163953Srrs inp6 = (struct in6pcb *)inp; 561163953Srrs 562163953Srrs inp6->inp_vflag |= INP_IPV6; 563163953Srrs inp6->in6p_hops = -1; /* use kernel default */ 564163953Srrs inp6->in6p_cksum = -1; /* just to be sure */ 565163953Srrs#ifdef INET 566163953Srrs /* 567163953Srrs * XXX: ugly!! IPv4 TTL initialization is necessary for an IPv6 568163953Srrs * socket as well, because the socket may be bound to an IPv6 569163953Srrs * wildcard address, which may match an IPv4-mapped IPv6 address. 570163953Srrs */ 571163953Srrs inp6->inp_ip_ttl = ip_defttl; 572163953Srrs#endif 573163953Srrs /* 574163953Srrs * Hmm what about the IPSEC stuff that is missing here but in 575163953Srrs * sctp_attach()? 576163953Srrs */ 577170205Srrs SCTP_INP_WUNLOCK(inp); 578163953Srrs return 0; 579163953Srrs} 580163953Srrs 581163953Srrsstatic int 582163953Srrssctp6_bind(struct socket *so, struct sockaddr *addr, struct thread *p) 583163953Srrs{ 584163953Srrs struct sctp_inpcb *inp; 585163953Srrs struct in6pcb *inp6; 586166086Srrs int error; 587163953Srrs 588163953Srrs inp = (struct sctp_inpcb *)so->so_pcb; 589171943Srrs if (inp == 0) { 590171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 591163953Srrs return EINVAL; 592171943Srrs } 593170056Srrs if (addr) { 594170056Srrs if ((addr->sa_family == AF_INET6) && 595170056Srrs (addr->sa_len != sizeof(struct sockaddr_in6))) { 596171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 597170056Srrs return EINVAL; 598170056Srrs } 599170056Srrs if ((addr->sa_family == AF_INET) && 600170056Srrs (addr->sa_len != sizeof(struct sockaddr_in))) { 601171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 602170056Srrs return EINVAL; 603170056Srrs } 604170056Srrs } 605163953Srrs inp6 = (struct in6pcb *)inp; 606163953Srrs inp6->inp_vflag &= ~INP_IPV4; 607163953Srrs inp6->inp_vflag |= INP_IPV6; 608166023Srrs if ((addr != NULL) && (SCTP_IPV6_V6ONLY(inp6) == 0)) { 609163953Srrs if (addr->sa_family == AF_INET) { 610163953Srrs /* binding v4 addr to v6 socket, so reset flags */ 611163953Srrs inp6->inp_vflag |= INP_IPV4; 612163953Srrs inp6->inp_vflag &= ~INP_IPV6; 613163953Srrs } else { 614163953Srrs struct sockaddr_in6 *sin6_p; 615163953Srrs 616163953Srrs sin6_p = (struct sockaddr_in6 *)addr; 617163953Srrs 618163953Srrs if (IN6_IS_ADDR_UNSPECIFIED(&sin6_p->sin6_addr)) { 619163953Srrs inp6->inp_vflag |= INP_IPV4; 620163953Srrs } else if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) { 621163953Srrs struct sockaddr_in sin; 622163953Srrs 623163953Srrs in6_sin6_2_sin(&sin, sin6_p); 624163953Srrs inp6->inp_vflag |= INP_IPV4; 625163953Srrs inp6->inp_vflag &= ~INP_IPV6; 626171572Srrs error = sctp_inpcb_bind(so, (struct sockaddr *)&sin, NULL, p); 627163953Srrs return error; 628163953Srrs } 629163953Srrs } 630163953Srrs } else if (addr != NULL) { 631163953Srrs /* IPV6_V6ONLY socket */ 632163953Srrs if (addr->sa_family == AF_INET) { 633163953Srrs /* can't bind v4 addr to v6 only socket! */ 634171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 635163953Srrs return EINVAL; 636163953Srrs } else { 637163953Srrs struct sockaddr_in6 *sin6_p; 638163953Srrs 639163953Srrs sin6_p = (struct sockaddr_in6 *)addr; 640163953Srrs 641163953Srrs if (IN6_IS_ADDR_V4MAPPED(&sin6_p->sin6_addr)) 642163953Srrs /* can't bind v4-mapped addrs either! */ 643163953Srrs /* NOTE: we don't support SIIT */ 644171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 645171943Srrs return EINVAL; 646163953Srrs } 647163953Srrs } 648171572Srrs error = sctp_inpcb_bind(so, addr, NULL, p); 649163953Srrs return error; 650163953Srrs} 651163953Srrs 652163953Srrs 653163953Srrsstatic void 654163953Srrssctp6_close(struct socket *so) 655163953Srrs{ 656163953Srrs struct sctp_inpcb *inp; 657163953Srrs uint32_t flags; 658163953Srrs 659163953Srrs inp = (struct sctp_inpcb *)so->so_pcb; 660163953Srrs if (inp == 0) 661163953Srrs return; 662163953Srrs 663163953Srrs /* 664163953Srrs * Inform all the lower layer assoc that we are done. 665163953Srrs */ 666163953Srrssctp_must_try_again: 667163953Srrs flags = inp->sctp_flags; 668163953Srrs#ifdef SCTP_LOG_CLOSING 669163953Srrs sctp_log_closing(inp, NULL, 17); 670163953Srrs#endif 671163953Srrs if (((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) && 672163953Srrs (atomic_cmpset_int(&inp->sctp_flags, flags, (flags | SCTP_PCB_FLAGS_SOCKET_GONE | SCTP_PCB_FLAGS_CLOSE_IP)))) { 673163953Srrs if (((so->so_options & SO_LINGER) && (so->so_linger == 0)) || 674163953Srrs (so->so_rcv.sb_cc > 0)) { 675163953Srrs#ifdef SCTP_LOG_CLOSING 676163953Srrs sctp_log_closing(inp, NULL, 13); 677163953Srrs#endif 678169380Srrs sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT 679169380Srrs ,SCTP_CALLED_AFTER_CMPSET_OFCLOSE); 680163953Srrs } else { 681163953Srrs#ifdef SCTP_LOG_CLOSING 682163953Srrs sctp_log_closing(inp, NULL, 14); 683163953Srrs#endif 684169380Srrs sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_GRACEFUL_CLOSE, 685169380Srrs SCTP_CALLED_AFTER_CMPSET_OFCLOSE); 686163953Srrs } 687163953Srrs /* 688163953Srrs * The socket is now detached, no matter what the state of 689163953Srrs * the SCTP association. 690163953Srrs */ 691163953Srrs SOCK_LOCK(so); 692167695Srrs SCTP_SB_CLEAR(so->so_snd); 693163953Srrs /* 694163953Srrs * same for the rcv ones, they are only here for the 695163953Srrs * accounting/select. 696163953Srrs */ 697167695Srrs SCTP_SB_CLEAR(so->so_rcv); 698167695Srrs /* Now null out the reference, we are completely detached. */ 699163953Srrs so->so_pcb = NULL; 700163953Srrs SOCK_UNLOCK(so); 701163953Srrs } else { 702163953Srrs flags = inp->sctp_flags; 703163953Srrs if ((flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) { 704163953Srrs goto sctp_must_try_again; 705163953Srrs } 706163953Srrs } 707163953Srrs return; 708163953Srrs 709163953Srrs} 710163953Srrs 711167598Srrs/* This could be made common with sctp_detach() since they are identical */ 712163953Srrs 713168709Srrsstatic 714168709Srrsint 715163953Srrssctp6_disconnect(struct socket *so) 716163953Srrs{ 717163953Srrs struct sctp_inpcb *inp; 718163953Srrs 719163953Srrs inp = (struct sctp_inpcb *)so->so_pcb; 720163953Srrs if (inp == NULL) { 721171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOTCONN); 722163953Srrs return (ENOTCONN); 723163953Srrs } 724163953Srrs SCTP_INP_RLOCK(inp); 725163953Srrs if (inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { 726166675Srrs if (SCTP_LIST_EMPTY(&inp->sctp_asoc_list)) { 727163953Srrs /* No connection */ 728163953Srrs SCTP_INP_RUNLOCK(inp); 729171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOTCONN); 730163953Srrs return (ENOTCONN); 731163953Srrs } else { 732163953Srrs int some_on_streamwheel = 0; 733163953Srrs struct sctp_association *asoc; 734163953Srrs struct sctp_tcb *stcb; 735163953Srrs 736163953Srrs stcb = LIST_FIRST(&inp->sctp_asoc_list); 737163953Srrs if (stcb == NULL) { 738163953Srrs SCTP_INP_RUNLOCK(inp); 739171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 740163953Srrs return (EINVAL); 741163953Srrs } 742163953Srrs SCTP_TCB_LOCK(stcb); 743163953Srrs asoc = &stcb->asoc; 744163953Srrs if (((so->so_options & SO_LINGER) && 745163953Srrs (so->so_linger == 0)) || 746163953Srrs (so->so_rcv.sb_cc > 0)) { 747163953Srrs if (SCTP_GET_STATE(asoc) != 748163953Srrs SCTP_STATE_COOKIE_WAIT) { 749163953Srrs /* Left with Data unread */ 750168709Srrs struct mbuf *op_err; 751163953Srrs 752168709Srrs op_err = sctp_generate_invmanparam(SCTP_CAUSE_USER_INITIATED_ABT); 753168709Srrs sctp_send_abort_tcb(stcb, op_err); 754163953Srrs SCTP_STAT_INCR_COUNTER32(sctps_aborted); 755163953Srrs } 756163953Srrs SCTP_INP_RUNLOCK(inp); 757163953Srrs if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) || 758163953Srrs (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { 759163953Srrs SCTP_STAT_DECR_GAUGE32(sctps_currestab); 760163953Srrs } 761171943Srrs if (sctp_free_assoc(inp, stcb, SCTP_DONOT_SETSCOPE, 762171943Srrs SCTP_FROM_SCTP6_USRREQ + SCTP_LOC_2) == 0) { 763171943Srrs SCTP_TCB_UNLOCK(stcb); 764171943Srrs } 765163953Srrs /* No unlock tcb assoc is gone */ 766163953Srrs return (0); 767163953Srrs } 768163953Srrs if (!TAILQ_EMPTY(&asoc->out_wheel)) { 769163953Srrs /* Check to see if some data queued */ 770163953Srrs struct sctp_stream_out *outs; 771163953Srrs 772163953Srrs TAILQ_FOREACH(outs, &asoc->out_wheel, 773163953Srrs next_spoke) { 774163953Srrs if (!TAILQ_EMPTY(&outs->outqueue)) { 775163953Srrs some_on_streamwheel = 1; 776163953Srrs break; 777163953Srrs } 778163953Srrs } 779163953Srrs } 780163953Srrs if (TAILQ_EMPTY(&asoc->send_queue) && 781163953Srrs TAILQ_EMPTY(&asoc->sent_queue) && 782163953Srrs (some_on_streamwheel == 0)) { 783163953Srrs /* nothing queued to send, so I'm done... */ 784163953Srrs if ((SCTP_GET_STATE(asoc) != 785163953Srrs SCTP_STATE_SHUTDOWN_SENT) && 786163953Srrs (SCTP_GET_STATE(asoc) != 787163953Srrs SCTP_STATE_SHUTDOWN_ACK_SENT)) { 788163953Srrs /* only send SHUTDOWN the first time */ 789163953Srrs sctp_send_shutdown(stcb, stcb->asoc.primary_destination); 790163953Srrs sctp_chunk_output(stcb->sctp_ep, stcb, 1); 791166675Srrs if ((SCTP_GET_STATE(asoc) == SCTP_STATE_OPEN) || 792166675Srrs (SCTP_GET_STATE(asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) { 793166675Srrs SCTP_STAT_DECR_GAUGE32(sctps_currestab); 794166675Srrs } 795171943Srrs SCTP_SET_STATE(asoc, SCTP_STATE_SHUTDOWN_SENT); 796163953Srrs sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWN, 797163953Srrs stcb->sctp_ep, stcb, 798163953Srrs asoc->primary_destination); 799163953Srrs sctp_timer_start(SCTP_TIMER_TYPE_SHUTDOWNGUARD, 800163953Srrs stcb->sctp_ep, stcb, 801163953Srrs asoc->primary_destination); 802163953Srrs } 803163953Srrs } else { 804163953Srrs /* 805163953Srrs * we still got (or just got) data to send, 806163953Srrs * so set SHUTDOWN_PENDING 807163953Srrs */ 808163953Srrs /* 809163953Srrs * XXX sockets draft says that MSG_EOF 810163953Srrs * should be sent with no data. currently, 811163953Srrs * we will allow user data to be sent first 812163953Srrs * and move to SHUTDOWN-PENDING 813163953Srrs */ 814163953Srrs asoc->state |= SCTP_STATE_SHUTDOWN_PENDING; 815163953Srrs } 816163953Srrs SCTP_TCB_UNLOCK(stcb); 817163953Srrs SCTP_INP_RUNLOCK(inp); 818163953Srrs return (0); 819163953Srrs } 820163953Srrs } else { 821163953Srrs /* UDP model does not support this */ 822163953Srrs SCTP_INP_RUNLOCK(inp); 823171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EOPNOTSUPP); 824163953Srrs return EOPNOTSUPP; 825163953Srrs } 826163953Srrs} 827163953Srrs 828168709Srrs 829163953Srrsint 830163953Srrssctp_sendm(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 831163953Srrs struct mbuf *control, struct thread *p); 832163953Srrs 833163953Srrs 834163953Srrsstatic int 835163953Srrssctp6_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr, 836163953Srrs struct mbuf *control, struct thread *p) 837163953Srrs{ 838163953Srrs struct sctp_inpcb *inp; 839163953Srrs struct inpcb *in_inp; 840163953Srrs struct in6pcb *inp6; 841163953Srrs 842163953Srrs#ifdef INET 843163953Srrs struct sockaddr_in6 *sin6; 844163953Srrs 845163953Srrs#endif /* INET */ 846163953Srrs /* No SPL needed since sctp_output does this */ 847163953Srrs 848163953Srrs inp = (struct sctp_inpcb *)so->so_pcb; 849163953Srrs if (inp == NULL) { 850163953Srrs if (control) { 851169352Srrs SCTP_RELEASE_PKT(control); 852163953Srrs control = NULL; 853163953Srrs } 854169352Srrs SCTP_RELEASE_PKT(m); 855171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 856163953Srrs return EINVAL; 857163953Srrs } 858163953Srrs in_inp = (struct inpcb *)inp; 859163953Srrs inp6 = (struct in6pcb *)inp; 860163953Srrs /* 861163953Srrs * For the TCP model we may get a NULL addr, if we are a connected 862163953Srrs * socket thats ok. 863163953Srrs */ 864163953Srrs if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) && 865163953Srrs (addr == NULL)) { 866163953Srrs goto connected_type; 867163953Srrs } 868163953Srrs if (addr == NULL) { 869169352Srrs SCTP_RELEASE_PKT(m); 870163953Srrs if (control) { 871169352Srrs SCTP_RELEASE_PKT(control); 872163953Srrs control = NULL; 873163953Srrs } 874171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EDESTADDRREQ); 875163953Srrs return (EDESTADDRREQ); 876163953Srrs } 877163953Srrs#ifdef INET 878163953Srrs sin6 = (struct sockaddr_in6 *)addr; 879166023Srrs if (SCTP_IPV6_V6ONLY(inp6)) { 880163953Srrs /* 881163953Srrs * if IPV6_V6ONLY flag, we discard datagrams destined to a 882163953Srrs * v4 addr or v4-mapped addr 883163953Srrs */ 884163953Srrs if (addr->sa_family == AF_INET) { 885171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 886163953Srrs return EINVAL; 887163953Srrs } 888163953Srrs if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 889171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 890163953Srrs return EINVAL; 891163953Srrs } 892163953Srrs } 893163953Srrs if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 894163953Srrs if (!ip6_v6only) { 895163953Srrs struct sockaddr_in sin; 896163953Srrs 897163953Srrs /* convert v4-mapped into v4 addr and send */ 898163953Srrs in6_sin6_2_sin(&sin, sin6); 899163953Srrs return sctp_sendm(so, flags, m, (struct sockaddr *)&sin, 900163953Srrs control, p); 901163953Srrs } else { 902163953Srrs /* mapped addresses aren't enabled */ 903171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 904163953Srrs return EINVAL; 905163953Srrs } 906163953Srrs } 907163953Srrs#endif /* INET */ 908163953Srrsconnected_type: 909163953Srrs /* now what about control */ 910163953Srrs if (control) { 911163953Srrs if (inp->control) { 912169420Srrs SCTP_PRINTF("huh? control set?\n"); 913169352Srrs SCTP_RELEASE_PKT(inp->control); 914163953Srrs inp->control = NULL; 915163953Srrs } 916163953Srrs inp->control = control; 917163953Srrs } 918163953Srrs /* Place the data */ 919163953Srrs if (inp->pkt) { 920165647Srrs SCTP_BUF_NEXT(inp->pkt_last) = m; 921163953Srrs inp->pkt_last = m; 922163953Srrs } else { 923163953Srrs inp->pkt_last = inp->pkt = m; 924163953Srrs } 925163953Srrs if ( 926163953Srrs /* FreeBSD and MacOSX uses a flag passed */ 927163953Srrs ((flags & PRUS_MORETOCOME) == 0) 928163953Srrs ) { 929163953Srrs /* 930163953Srrs * note with the current version this code will only be used 931163953Srrs * by OpenBSD, NetBSD and FreeBSD have methods for 932163953Srrs * re-defining sosend() to use sctp_sosend(). One can 933163953Srrs * optionaly switch back to this code (by changing back the 934163953Srrs * defininitions but this is not advisable. 935163953Srrs */ 936163953Srrs int ret; 937163953Srrs 938163953Srrs ret = sctp_output(inp, inp->pkt, addr, inp->control, p, flags); 939163953Srrs inp->pkt = NULL; 940163953Srrs inp->control = NULL; 941163953Srrs return (ret); 942163953Srrs } else { 943163953Srrs return (0); 944163953Srrs } 945163953Srrs} 946163953Srrs 947163953Srrsstatic int 948163953Srrssctp6_connect(struct socket *so, struct sockaddr *addr, struct thread *p) 949163953Srrs{ 950167598Srrs uint32_t vrf_id; 951163953Srrs int error = 0; 952163953Srrs struct sctp_inpcb *inp; 953163953Srrs struct in6pcb *inp6; 954163953Srrs struct sctp_tcb *stcb; 955163953Srrs 956163953Srrs#ifdef INET 957163953Srrs struct sockaddr_in6 *sin6; 958163953Srrs struct sockaddr_storage ss; 959163953Srrs 960163953Srrs#endif /* INET */ 961163953Srrs 962163953Srrs inp6 = (struct in6pcb *)so->so_pcb; 963163953Srrs inp = (struct sctp_inpcb *)so->so_pcb; 964163953Srrs if (inp == 0) { 965171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 966163953Srrs return (ECONNRESET); /* I made the same as TCP since we are 967163953Srrs * not setup? */ 968163953Srrs } 969170056Srrs if (addr == NULL) { 970171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 971170056Srrs return (EINVAL); 972170056Srrs } 973170056Srrs if ((addr->sa_family == AF_INET6) && (addr->sa_len != sizeof(struct sockaddr_in6))) { 974171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 975170056Srrs return (EINVAL); 976170056Srrs } 977170056Srrs if ((addr->sa_family == AF_INET) && (addr->sa_len != sizeof(struct sockaddr_in))) { 978171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 979170056Srrs return (EINVAL); 980170056Srrs } 981168299Srrs vrf_id = inp->def_vrf_id; 982163953Srrs SCTP_ASOC_CREATE_LOCK(inp); 983163953Srrs SCTP_INP_RLOCK(inp); 984163953Srrs if ((inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) == 985163953Srrs SCTP_PCB_FLAGS_UNBOUND) { 986163953Srrs /* Bind a ephemeral port */ 987163953Srrs SCTP_INP_RUNLOCK(inp); 988163953Srrs error = sctp6_bind(so, NULL, p); 989163953Srrs if (error) { 990163953Srrs SCTP_ASOC_CREATE_UNLOCK(inp); 991163953Srrs 992163953Srrs return (error); 993163953Srrs } 994163953Srrs SCTP_INP_RLOCK(inp); 995163953Srrs } 996163953Srrs if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) && 997163953Srrs (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED)) { 998163953Srrs /* We are already connected AND the TCP model */ 999163953Srrs SCTP_INP_RUNLOCK(inp); 1000163953Srrs SCTP_ASOC_CREATE_UNLOCK(inp); 1001171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EADDRINUSE); 1002163953Srrs return (EADDRINUSE); 1003163953Srrs } 1004163953Srrs#ifdef INET 1005163953Srrs sin6 = (struct sockaddr_in6 *)addr; 1006166023Srrs if (SCTP_IPV6_V6ONLY(inp6)) { 1007163953Srrs /* 1008163953Srrs * if IPV6_V6ONLY flag, ignore connections destined to a v4 1009163953Srrs * addr or v4-mapped addr 1010163953Srrs */ 1011163953Srrs if (addr->sa_family == AF_INET) { 1012163953Srrs SCTP_INP_RUNLOCK(inp); 1013163953Srrs SCTP_ASOC_CREATE_UNLOCK(inp); 1014171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1015163953Srrs return EINVAL; 1016163953Srrs } 1017163953Srrs if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 1018163953Srrs SCTP_INP_RUNLOCK(inp); 1019163953Srrs SCTP_ASOC_CREATE_UNLOCK(inp); 1020171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1021163953Srrs return EINVAL; 1022163953Srrs } 1023163953Srrs } 1024163953Srrs if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) { 1025163953Srrs if (!ip6_v6only) { 1026163953Srrs /* convert v4-mapped into v4 addr */ 1027163953Srrs in6_sin6_2_sin((struct sockaddr_in *)&ss, sin6); 1028163953Srrs addr = (struct sockaddr *)&ss; 1029163953Srrs } else { 1030163953Srrs /* mapped addresses aren't enabled */ 1031163953Srrs SCTP_INP_RUNLOCK(inp); 1032163953Srrs SCTP_ASOC_CREATE_UNLOCK(inp); 1033171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1034163953Srrs return EINVAL; 1035163953Srrs } 1036163953Srrs } else 1037163953Srrs#endif /* INET */ 1038163953Srrs addr = addr; /* for true v6 address case */ 1039163953Srrs 1040163953Srrs /* Now do we connect? */ 1041163953Srrs if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 1042163953Srrs stcb = LIST_FIRST(&inp->sctp_asoc_list); 1043169420Srrs if (stcb) { 1044163953Srrs SCTP_TCB_UNLOCK(stcb); 1045169420Srrs } 1046163953Srrs SCTP_INP_RUNLOCK(inp); 1047163953Srrs } else { 1048163953Srrs SCTP_INP_RUNLOCK(inp); 1049163953Srrs SCTP_INP_WLOCK(inp); 1050163953Srrs SCTP_INP_INCR_REF(inp); 1051163953Srrs SCTP_INP_WUNLOCK(inp); 1052163953Srrs stcb = sctp_findassociation_ep_addr(&inp, addr, NULL, NULL, NULL); 1053163953Srrs if (stcb == NULL) { 1054163953Srrs SCTP_INP_WLOCK(inp); 1055163953Srrs SCTP_INP_DECR_REF(inp); 1056163953Srrs SCTP_INP_WUNLOCK(inp); 1057163953Srrs } 1058163953Srrs } 1059163953Srrs 1060163953Srrs if (stcb != NULL) { 1061163953Srrs /* Already have or am bring up an association */ 1062163953Srrs SCTP_ASOC_CREATE_UNLOCK(inp); 1063163953Srrs SCTP_TCB_UNLOCK(stcb); 1064171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EALREADY); 1065163953Srrs return (EALREADY); 1066163953Srrs } 1067163953Srrs /* We are GOOD to go */ 1068171531Srrs stcb = sctp_aloc_assoc(inp, addr, 1, &error, 0, vrf_id, p); 1069163953Srrs SCTP_ASOC_CREATE_UNLOCK(inp); 1070163953Srrs if (stcb == NULL) { 1071163953Srrs /* Gak! no memory */ 1072163953Srrs return (error); 1073163953Srrs } 1074163953Srrs if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) { 1075163953Srrs stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_CONNECTED; 1076163953Srrs /* Set the connected flag so we can queue data */ 1077163953Srrs soisconnecting(so); 1078163953Srrs } 1079163953Srrs stcb->asoc.state = SCTP_STATE_COOKIE_WAIT; 1080169420Srrs (void)SCTP_GETTIME_TIMEVAL(&stcb->asoc.time_entered); 1081163953Srrs 1082163953Srrs /* initialize authentication parameters for the assoc */ 1083163953Srrs sctp_initialize_auth_params(inp, stcb); 1084163953Srrs 1085163953Srrs sctp_send_initiate(inp, stcb); 1086163953Srrs SCTP_TCB_UNLOCK(stcb); 1087163953Srrs return error; 1088163953Srrs} 1089163953Srrs 1090163953Srrsstatic int 1091163953Srrssctp6_getaddr(struct socket *so, struct sockaddr **addr) 1092163953Srrs{ 1093163953Srrs struct sockaddr_in6 *sin6; 1094163953Srrs struct sctp_inpcb *inp; 1095167598Srrs uint32_t vrf_id; 1096167598Srrs struct sctp_ifa *sctp_ifa; 1097163953Srrs 1098163953Srrs int error; 1099163953Srrs 1100163953Srrs /* 1101163953Srrs * Do the malloc first in case it blocks. 1102163953Srrs */ 1103163953Srrs SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1104163953Srrs sin6->sin6_family = AF_INET6; 1105163953Srrs sin6->sin6_len = sizeof(*sin6); 1106163953Srrs 1107163953Srrs inp = (struct sctp_inpcb *)so->so_pcb; 1108163953Srrs if (inp == NULL) { 1109163953Srrs SCTP_FREE_SONAME(sin6); 1110171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 1111163953Srrs return ECONNRESET; 1112163953Srrs } 1113163953Srrs SCTP_INP_RLOCK(inp); 1114163953Srrs sin6->sin6_port = inp->sctp_lport; 1115163953Srrs if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) { 1116163953Srrs /* For the bound all case you get back 0 */ 1117163953Srrs if (inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) { 1118163953Srrs struct sctp_tcb *stcb; 1119163953Srrs struct sockaddr_in6 *sin_a6; 1120163953Srrs struct sctp_nets *net; 1121163953Srrs int fnd; 1122163953Srrs 1123163953Srrs stcb = LIST_FIRST(&inp->sctp_asoc_list); 1124163953Srrs if (stcb == NULL) { 1125163953Srrs goto notConn6; 1126163953Srrs } 1127163953Srrs fnd = 0; 1128163953Srrs sin_a6 = NULL; 1129163953Srrs TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1130163953Srrs sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 1131164085Srrs if (sin_a6 == NULL) 1132164085Srrs /* this will make coverity happy */ 1133164085Srrs continue; 1134164085Srrs 1135163953Srrs if (sin_a6->sin6_family == AF_INET6) { 1136163953Srrs fnd = 1; 1137163953Srrs break; 1138163953Srrs } 1139163953Srrs } 1140163953Srrs if ((!fnd) || (sin_a6 == NULL)) { 1141163953Srrs /* punt */ 1142163953Srrs goto notConn6; 1143163953Srrs } 1144168299Srrs vrf_id = inp->def_vrf_id; 1145168299Srrs sctp_ifa = sctp_source_address_selection(inp, stcb, (sctp_route_t *) & net->ro, net, 0, vrf_id); 1146167598Srrs if (sctp_ifa) { 1147167598Srrs sin6->sin6_addr = sctp_ifa->address.sin6.sin6_addr; 1148167598Srrs } 1149163953Srrs } else { 1150163953Srrs /* For the bound all case you get back 0 */ 1151163953Srrs notConn6: 1152163953Srrs memset(&sin6->sin6_addr, 0, sizeof(sin6->sin6_addr)); 1153163953Srrs } 1154163953Srrs } else { 1155163953Srrs /* Take the first IPv6 address in the list */ 1156163953Srrs struct sctp_laddr *laddr; 1157163953Srrs int fnd = 0; 1158163953Srrs 1159163953Srrs LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) { 1160167598Srrs if (laddr->ifa->address.sa.sa_family == AF_INET6) { 1161163953Srrs struct sockaddr_in6 *sin_a; 1162163953Srrs 1163167598Srrs sin_a = (struct sockaddr_in6 *)&laddr->ifa->address.sin6; 1164163953Srrs sin6->sin6_addr = sin_a->sin6_addr; 1165163953Srrs fnd = 1; 1166163953Srrs break; 1167163953Srrs } 1168163953Srrs } 1169163953Srrs if (!fnd) { 1170163953Srrs SCTP_FREE_SONAME(sin6); 1171163953Srrs SCTP_INP_RUNLOCK(inp); 1172171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 1173163953Srrs return ENOENT; 1174163953Srrs } 1175163953Srrs } 1176163953Srrs SCTP_INP_RUNLOCK(inp); 1177163953Srrs /* Scoping things for v6 */ 1178164085Srrs if ((error = sa6_recoverscope(sin6)) != 0) { 1179164085Srrs SCTP_FREE_SONAME(sin6); 1180163953Srrs return (error); 1181164085Srrs } 1182163953Srrs (*addr) = (struct sockaddr *)sin6; 1183163953Srrs return (0); 1184163953Srrs} 1185163953Srrs 1186163953Srrsstatic int 1187163953Srrssctp6_peeraddr(struct socket *so, struct sockaddr **addr) 1188163953Srrs{ 1189163953Srrs struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)*addr; 1190163953Srrs int fnd; 1191163953Srrs struct sockaddr_in6 *sin_a6; 1192163953Srrs struct sctp_inpcb *inp; 1193163953Srrs struct sctp_tcb *stcb; 1194163953Srrs struct sctp_nets *net; 1195163953Srrs 1196163953Srrs int error; 1197163953Srrs 1198163953Srrs /* 1199163953Srrs * Do the malloc first in case it blocks. 1200163953Srrs */ 1201163953Srrs inp = (struct sctp_inpcb *)so->so_pcb; 1202163953Srrs if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) { 1203163953Srrs /* UDP type and listeners will drop out here */ 1204171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOTCONN); 1205163953Srrs return (ENOTCONN); 1206163953Srrs } 1207163953Srrs SCTP_MALLOC_SONAME(sin6, struct sockaddr_in6 *, sizeof *sin6); 1208163953Srrs sin6->sin6_family = AF_INET6; 1209163953Srrs sin6->sin6_len = sizeof(*sin6); 1210163953Srrs 1211163953Srrs /* We must recapture incase we blocked */ 1212163953Srrs inp = (struct sctp_inpcb *)so->so_pcb; 1213163953Srrs if (inp == NULL) { 1214163953Srrs SCTP_FREE_SONAME(sin6); 1215171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 1216163953Srrs return ECONNRESET; 1217163953Srrs } 1218163953Srrs SCTP_INP_RLOCK(inp); 1219163953Srrs stcb = LIST_FIRST(&inp->sctp_asoc_list); 1220169420Srrs if (stcb) { 1221163953Srrs SCTP_TCB_LOCK(stcb); 1222169420Srrs } 1223163953Srrs SCTP_INP_RUNLOCK(inp); 1224163953Srrs if (stcb == NULL) { 1225163953Srrs SCTP_FREE_SONAME(sin6); 1226171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ECONNRESET); 1227163953Srrs return ECONNRESET; 1228163953Srrs } 1229163953Srrs fnd = 0; 1230163953Srrs TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) { 1231163953Srrs sin_a6 = (struct sockaddr_in6 *)&net->ro._l_addr; 1232163953Srrs if (sin_a6->sin6_family == AF_INET6) { 1233163953Srrs fnd = 1; 1234163953Srrs sin6->sin6_port = stcb->rport; 1235163953Srrs sin6->sin6_addr = sin_a6->sin6_addr; 1236163953Srrs break; 1237163953Srrs } 1238163953Srrs } 1239163953Srrs SCTP_TCB_UNLOCK(stcb); 1240163953Srrs if (!fnd) { 1241163953Srrs /* No IPv4 address */ 1242163953Srrs SCTP_FREE_SONAME(sin6); 1243171943Srrs SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, ENOENT); 1244163953Srrs return ENOENT; 1245163953Srrs } 1246163953Srrs if ((error = sa6_recoverscope(sin6)) != 0) 1247163953Srrs return (error); 1248163953Srrs *addr = (struct sockaddr *)sin6; 1249163953Srrs return (0); 1250163953Srrs} 1251163953Srrs 1252163953Srrsstatic int 1253163953Srrssctp6_in6getaddr(struct socket *so, struct sockaddr **nam) 1254163953Srrs{ 1255163953Srrs struct sockaddr *addr; 1256163953Srrs struct in6pcb *inp6 = sotoin6pcb(so); 1257166086Srrs int error; 1258163953Srrs 1259171943Srrs if (inp6 == NULL) { 1260171943Srrs SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1261163953Srrs return EINVAL; 1262171943Srrs } 1263163953Srrs /* allow v6 addresses precedence */ 1264163953Srrs error = sctp6_getaddr(so, nam); 1265163953Srrs if (error) { 1266163953Srrs /* try v4 next if v6 failed */ 1267163953Srrs error = sctp_ingetaddr(so, nam); 1268163953Srrs if (error) { 1269163953Srrs return (error); 1270163953Srrs } 1271163953Srrs addr = *nam; 1272163953Srrs /* if I'm V6ONLY, convert it to v4-mapped */ 1273166023Srrs if (SCTP_IPV6_V6ONLY(inp6)) { 1274163953Srrs struct sockaddr_in6 sin6; 1275163953Srrs 1276163953Srrs in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6); 1277163953Srrs memcpy(addr, &sin6, sizeof(struct sockaddr_in6)); 1278168709Srrs 1279163953Srrs } 1280163953Srrs } 1281163953Srrs return (error); 1282163953Srrs} 1283163953Srrs 1284163953Srrs 1285163953Srrsstatic int 1286163953Srrssctp6_getpeeraddr(struct socket *so, struct sockaddr **nam) 1287163953Srrs{ 1288163953Srrs struct sockaddr *addr = *nam; 1289163953Srrs struct in6pcb *inp6 = sotoin6pcb(so); 1290166086Srrs int error; 1291163953Srrs 1292171943Srrs if (inp6 == NULL) { 1293171943Srrs SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTP6_USRREQ, EINVAL); 1294163953Srrs return EINVAL; 1295171943Srrs } 1296163953Srrs /* allow v6 addresses precedence */ 1297163953Srrs error = sctp6_peeraddr(so, nam); 1298163953Srrs if (error) { 1299163953Srrs /* try v4 next if v6 failed */ 1300163953Srrs error = sctp_peeraddr(so, nam); 1301163953Srrs if (error) { 1302163953Srrs return (error); 1303163953Srrs } 1304163953Srrs /* if I'm V6ONLY, convert it to v4-mapped */ 1305166023Srrs if (SCTP_IPV6_V6ONLY(inp6)) { 1306163953Srrs struct sockaddr_in6 sin6; 1307163953Srrs 1308163953Srrs in6_sin_2_v4mapsin6((struct sockaddr_in *)addr, &sin6); 1309163953Srrs memcpy(addr, &sin6, sizeof(struct sockaddr_in6)); 1310163953Srrs } 1311163953Srrs } 1312163953Srrs return error; 1313163953Srrs} 1314163953Srrs 1315163953Srrsstruct pr_usrreqs sctp6_usrreqs = { 1316163953Srrs .pru_abort = sctp6_abort, 1317163953Srrs .pru_accept = sctp_accept, 1318163953Srrs .pru_attach = sctp6_attach, 1319163953Srrs .pru_bind = sctp6_bind, 1320163953Srrs .pru_connect = sctp6_connect, 1321163953Srrs .pru_control = in6_control, 1322163953Srrs .pru_close = sctp6_close, 1323163953Srrs .pru_detach = sctp6_close, 1324163953Srrs .pru_sopoll = sopoll_generic, 1325163953Srrs .pru_disconnect = sctp6_disconnect, 1326163953Srrs .pru_listen = sctp_listen, 1327163953Srrs .pru_peeraddr = sctp6_getpeeraddr, 1328163953Srrs .pru_send = sctp6_send, 1329163953Srrs .pru_shutdown = sctp_shutdown, 1330163953Srrs .pru_sockaddr = sctp6_in6getaddr, 1331163953Srrs .pru_sosend = sctp_sosend, 1332163953Srrs .pru_soreceive = sctp_soreceive 1333163953Srrs}; 1334